Overclocking the Intel E8200 Core 2 Duo ‘Wolfdale’ Processor

January 16th, 2008

Ok – so, if you read my last post about GIS systems and Sugarcane Yield Monitors you would be well aware that I’ve been labouring with a very processor intensive task called ‘Inverse Distance Weighted Yield Projections’. With over 2 million data points, the process takes many days… SO… in the interest of speeding it up, I recently decided to buy and overclock one of the new generation ‘Wolfdale’ Intel 45nm Core 2 Duo Processors – the E8200, which is the little brother to the new e8400 and e8500 series.

Firstly, the E8200 processor itself uses the same socket (775) as Intel has been using for quite some time now, but as I’ve been using AMD 64 processors up until now (socket 939), I needed to get a new motherboard as well – I chose the Gigabyte P35C-DS3R motherbard.

Meh – what the heck – if you’re going to go all out, why not get the works – so I topped off my purchase with some Kingston HyperX PC8500 DDR2 RAM as well – which is rated to 1066MhZ.

Add to that a nice little RAID 0 array of 2*500Gb 7.2K rpm hard drives for my data, and 1 10K RPM 160Gb WD Raptor, and you’re starting to shape up as a very speedy system.

Recommended Overclocking Settings for the E8200

Ok – so, the E8200 is rated at 2.66 GHz out of the box. With a little trial and error, I’ve been able to get it stable at a pretty decent 3.92GHz with the stock standard cooler. Here are the settings I used –

  • Ram Latency Settings – 5-5-5-10
  • RAM:FSB Ratio 1:1 (so effectively the Ram is matched to the CPU speed, running at around 490MHz – well, actually, 980 because it’s DDR – double data rate)
  • CPU Core voltage – 1.25 volts (this one was a suprise – many folks suggest you need to go as high as 1.5 – I didn’t)
  • RAM Voltage – 2.2V
  • CPU Clock 490MHz at the default multiplier of 8.

The system (on account of the low voltages) actually runs very cool – around 42 degrees Celsius (107 F) at idle, with a max temp of 62 degrees C (141 F) running Prime95, which is a CPU testing tool (amongst other things) – and that’s just using a stock CPU cooler with Arctic 5 heatsink compound.

Cool, in my mind, is good. If a processor runs cool, it’s usually a good sign that it isย energy efficient – and it definitely means that less energy has to be spent keeping it cool which means lower electricity bills and a smaller environmental footprint – a good outcome all round.

So… contrary to the bad press I have heard elsewhere about the E8200 being not so overclockable, I’m absolutely stoked with these figures – but rumor has it that the E8400 and E8500 are getting prodigious numbers in theย mid 4Ghz range, so they may be worthy of the additional investment, although the E8500 is a little overpriced for only an incremental increase.

For those of you interested – my particular CPU is the number 6 stepping – here’s a picture of the processor’s SuperPi numbers (just over 12 secs) –

Intel E8200 Overclocking

Some Additional E8200 Overclocking Tips

  1. To get very high CPU speeds like those noted above – YOU WILL NEED FAST RAM that can quite happily sit at ~ 960Mhz or above. A high quality DDR2 800Mhz stick MIGHT cut it, but I’d recommend going for a min of 1066MhZ RAM (PC8500), otherwise you’re going to find your overclock will be constrained to around 3.3Ghz.
  2. A New RAM technology is currently emerging called DDR3 – It offers speeds in excess of 1066MHz, but it is horrendously expensive – consider getting a motherboard (like the gigabyte Gigabyte P35C-DS3R I chose) that can handle BOTH DDR2 and DDR3 memory – socket 775 is going to be around for a while, and you might want to use DDR3 in the future.
  3. Don’t go overboard with the CPU voltage – some people are recommending as high as 1.5V, but I’ve found that past 1.3V you are mostly generating exponentially more heat for very little additional clock speed – it’s not worth it unless you’re nuts and like spending heaps of money on expensive cooling gear.

How did you go? Did you achieve the same speeds? Are you doing better with an E8400 or E8500? How much better? Got any questions? I’m really keen to hearย from youย – leave a comment below!

All the best –



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123 Comments Add your own

  • 1. JohnMu  |  January 20th, 2008 at 6:47 am

    Stock cooler? That’s one of the few things I always buy with a new CPU. Those Intel leaf-blowers are just too loud for me :). Have you checked to make sure that you’re actually using both cores properly? VB.NET is sometimes a bit single-core-focused, unless you work on splitting the workload into multiple threads. On the other hand, if you want to use the system for something while it’s processing, doing the work on a single core might be preferable ๐Ÿ˜€

    PS Good to see you posting again!

  • 2. theDuck  |  January 20th, 2008 at 9:18 am

    Yeah by stock cooler I mean the one that comes with the processor Mu – which is infinitely tiny on the new 45nm cores – about half the size of the latest AMD coolers – but, amazingly, it seems, quite effective. As for the noise – well, suprisingly, again, quite quiet ๐Ÿ™‚

    I would have thought that smaller pipes (45 nm) would have led to higher temperatures, but it seems intel has also managed to drop the voltage fairly significantly also, so these are not altogether ‘hot’ processors, even when overclocked this much.

    Re whether or not I’m making full use of the cores, no I’m not – the particular app that I’m working on lends itself to sequential processing on one core rather than parallel processing on two, although I’ve been looking into the VB.NET pre-emptive multitasking capabilities (the equivalent of your FORKs etc in C).. hmm.. we’ll see.

    BUT – for testing purposes on this overclock I’ve used CPUBurn and Orthos to load both CPU’s to the max. Yes I have found some (recoverable) instability at this high overclock, and that may be able to be avoided with a better cooler.

    Certainly increasing the VCore doesn’t seem to help much – but reducing the clock to around 3.7Ghz does the trick even for Orthos – although I haven’t been able to find any ‘real world’ application that loads the CPU in quite the same way as those testing apps do, so for all intensive purposes the 3.92 O/C is stable.

    Re: Posting more – I’m moving house to a place that only has dial-up (yikes! and only 20km out of the city – welcome to Brisbane) over the next few weeks so I’m getting my internetting out of the way now ๐Ÿ™‚

  • 3. Joseph Glover  |  February 9th, 2008 at 12:59 pm

    I’m trying to O’C my E8200 and have been following your guide but i appear to be missing somthing….

    I’m running E8200 CPU 4gb Crucial Balistix 8500C5 RAM on a Gigabyte Ga-p35-DQ6.

    so i thought your guide would be ideal! very similar specs.

    if i try and overclock my CPU even to 3ghz to cant boot into windows… but i know its me….

    my ram timings as stock 2.2v
    my cpu is the same as yours.. right down to the stepping.
    our BIOS’s cant be that different. so what am i doing wrong?

    the one thing i cant find on my BIOS is RAM:FSB Ratio???? does to go by a different description in the BIOS?

    i have great ZALMAN copper cooling.. i really think with a little know how it could push 4ghz.

    Any help would be great.



  • 4. theDuck  |  February 10th, 2008 at 11:58 am

    Hi Jo – the RAM:FSB ratio is your problem.

    Not being able to post BIOS is a really common symptom of pushing your RAM way too fast.

    You need to pull the clock rate of the RAM back a little or you’ll be driving it heaps quicker than it can take (by default those boards overclock the RAM relative to the FSB.)

    I’d check out your moby manual – I’d suspect it will be there, maybe just called something different.

    You basically want your ram running at twice the speed of the base clock – so with a base clock of 450MHz (450*8=3.6GhZ actual CPU clock) you want to see your ram running at a multiplier of 2 – ie 900MHz


  • 5. Joseph Glover  |  February 10th, 2008 at 10:08 pm

    Great! thanks for that.

    it was called the system Memory Multiplier, and your right, it was set to auto and so pushing my speed passed 2ghz! Hope it hasn’t done any damage.

    I’m doing my first O’C now. I’ll keep you dated.



  • 6. Joseph Glover  |  February 10th, 2008 at 10:58 pm

    First O’C and i think it has alot more head room!
    450×8 = 3.60ghz
    RAM Multiplier at 2.00 = 900mhz (can go to 1066 as the ram is DDR8500C5)
    V core @ 1.28 (will try and reduce that)

    Thanks for your help! 1ghz O’C not too shabby for the first crack.


  • 7. theDuck  |  February 11th, 2008 at 11:28 am

    Good show!

    I’d suggest ~3.7GHz @1.27 v is a realistic target for a solid, stable system without going overboard with water coolers etc.



  • 8. Nick  |  February 22nd, 2008 at 1:40 pm

    Hey, thanks for the article. I’m wondering why you opted for the DS3R over the DS3?


  • 9. Greg K.  |  March 5th, 2008 at 9:32 am

    DS3R has built-in RAID capabilities, if I recall correctly.

    I enjoyed your OC review, and I’d like to contribute my $0.02-worth from my own experience. I currently have a somewhat inferior E4600 on the P35-DS3, but I run it easily at 3.2Ghz with PC2-6400 memory (800Mhz) from Crucial running at 1000Mhz 4-4-4-12 timings. System is 95% stable with some very rare very obscure crashes, that happen so rarely that they do not bother me. For all I know it could be Vista x64 related (I have 4Gb of RAM). The crashes do seem to go away at stock settings, but that just may mean that they’d still happen, only will take more extreme conditions.

    I process HD video and play some DX9 games on my PC, as well as use Photoshop and Premiere filters A LOT. so I’d say I put moderate to heavy use on the CPU. Even more so on the memory.


    #1 good cooling does not necessarily equate to “heaps of money on expensive cooling gear”. A decent Thermalright or Zalman or (my choice) Scythe will do the job very nicely at sub $50. To spend upward of a $1000 on great mobo, memory, and $250 CPU, and to skimp $50 on the lifeline of your whole system – the cooling is plain bad PC design in my mind. My 65nm E4600 never exceeds 53C at highest of loads. Considering that I like to stay warm and my ambient temps run at 70-75F, that’s NOT a bad number. All included, I have 11 fans in my system: 1 120mm Power Supply fan, 4 120mm case fans (strategically placed to blow in on HDDs, in on the video card, out the back,and out of the top), 2 120mm fans on Scythe Infinity, 3 micro fans on the Corsair memory cooler, 1 stock fan on the overclocked ATI 3850. I wouldn’t say that my system is the HTPC dream machine, farfrom it on may counts, BUT it’s pretty darn quiet for every day work. Quietest PC I have in my house, including 2 laptops. Total cost of cooling in my machine (without the PSU and video fans): $90. Unlike liquid systems, these fans will outlive every other component in my machine except for the tower case.

    #2 Of all brand name memories, I find Kingston has the worst OC. go for PQI or Crucial if you can. Most of the time PQI is cheaper than big-K anyway. If you want to go crazy, get some Mushkin memory. It’s over-the-top great!

    #3 Lower multi+higher FSB = faster overall system speed at the same Ghz. So 500×8 would beat 445×9 any day. You may have to add some juice to your FSB though, which Gigabyte mobos will take without a degree of temp increase. Your review leaves me to wonder that if my target speed is stable 4Ghz, should I spend money on the 8400 ando do 500×8 or should I just spend half the price difference on better cooling and end up with a longer lifespan for my system and better core temps at the same 500×8 on 8200? Any more than 4Ghz, and I’m due for a very expensive memory upgrade. Have to consider if it’s really worth spending extra $60 on CPU and extra $150 or so to get 1066 memory with CAS 5 or even 6 timings just to push it another 10% to 4.4Ghz or so.

    #4 To Joseph Glover: memory multiplier is not all that can break things. Make sure your PCI-E is not set on Auto. you can render your system dead very quickly at these speeds. PCI-E overclocks very poorly. I set my system to 110 fixed with my eyes closed, and I don’t ever try to push it. Why risk losing a $200 video card and other perepherals? 10% OC on the bus lets me OC my video card a little more. I get sick frame rates in HL2 engine games @ 1920×1200 (I love Team Fortress 2).

    #5 This advice isn’t suitable for most people, but it certainly is for you – opt for a Quad core, and optimize your routines to use them all. You’ll get more performance at 2.6Ghz than you can out of 8200 at 4Ghz. There’s a new AMD 9900 on the market that seems to beat at stock speed (200FSBx13=2.6Ghz) an OC’ed E8400 @ 4.4Ghz. Makes you wonder. This only applies to computational benchmarks and only when software can recognize all 4 cores.

    Hope this helps you guys get more out of your PCs for the same money. I love high speed at a reasonable budget!

  • 10. theDuck  |  March 5th, 2008 at 9:50 am

    NICK – DS3R does have raid, but it also has six memory sockets – two of which are for DDR3 – the next gen memory. I just bought it because it makes the board a bit more future proof.

    GREG – Aha! Now we’re talking – some meaty content from someone who’s been there, done that – Thanks Greg.

    And – by the way Greg, thanks so much for pointing out how essential it is to take the PCI off Auto – I’ve blown a motherboard soundcard before by forgetting to turn that off ๐Ÿ™‚

    Re E8200 – In your circumstance I’d be going the e8400 as, like you say, if you’re reusing your memory sticks you’re going to peak out pretty quick at ~ 3.9GHz with the E8200. The E8400 should see you well in excess of 4.



  • 11. Joseph Glover  |  March 5th, 2008 at 10:19 am

    Thanks Greg… well… HA! i’ve been running my 8200 at 3.66ghz since my initial post with PCIX on AUTO!!! bollox!!! ๐Ÿ™ but right now (new system build) I’m running at stock.. 2.66ghz

    If i turn auto off? whats the norm? 110 is an OC right?

    My RAM is crucial Ballistix 8500 CAS5 ( yet my MOBO reads it as 800mhz so im thinking i have alot of head room.. Hosw much joice should i give the FSB if i’m wanting to hit a stable 4ghz?

    a quick breakdown would be great.

    so for now.. i’m back at the stock..

    thanks for you help guys.


  • 12. theDuck  |  March 5th, 2008 at 11:04 am

    Joseph – that’s a ~50% overclock – for future reference the default is 100, and you’ll prob find things will be stable at 110 – so set to that.

    Re how much joice – I’d do this –

    1. Set your PCI to 110.
    2. Set Ram Multiplier back to ~ 2 instead of auto.
    3. Start the CPU clock at 470×8.

    From there, you just need to up the clock gradually, checking for stability each time. You may need to up the CPU / FSb Voltage too (in fact to get to 4GHz, that’s a dead cert) – possibly you’ll need to upvolt your RAM by +0.2V or so also.

    Just a matter of trial and error.


  • 13. cosmico89  |  March 6th, 2008 at 6:30 pm

    hi to all … I have this processor e8200 and created a preview at least I hope hihi .. I have arrived safely to 4ghz only then that the ram is not supported more then went over .. not for the driving I do not want to do but spam is on http://www.deuxexmachina.it

  • 14. doddie  |  March 7th, 2008 at 11:34 am

    Hi Folks,

    1st time OverClocking, bear with me ๐Ÿ˜‰
    I have a E8200 wanting to OC to 3ghz for now.

    I have figured out most of the settings and applied them in bios
    and its reading 3ghz ok. not saved them tho, im not sure about
    the PCI. I know to change from auto, but do i need to set @ 110
    if im only going to 3ghz? would 103 be enough? dont want to fry my board, would it be unstable if its set too low?

    Gigabyte P35 DS3 Rev2, 2 GBCrucial Ball tracer (8500)

    375×8 = 3ghz
    RAM Multiplier at 2.00 = 750 mhz (can go to 1066 as the ram is DDR8500)
    Timing at 2.20v

    Do I need to change any other voltages, vcore etc..for 3Ghz?
    Current stock readings in CPUID Monitor now….

    Voltage sensor 0 1.20 Volts [0x4B] (CPU VCORE)
    Voltage sensor 1 2.18 Volts [0x88] (DDR)
    Voltage sensor 2 3.31 Volts [0xCF] (+3.3V)
    Voltage sensor 3 4.89 Volts [0xB6] (+5V)
    Voltage sensor 7 11.84 Volts [0xB9] (+12V)
    Voltage sensor 8 3.18 Volts [0xC7] (VBAT)
    Temperature sensor 0 30ยฐC (85ยฐF) [0x1E] (TMPIN0)
    Temperature sensor 1 22ยฐC (71ยฐF) [0x16] (TMPIN1)
    Fan sensor 0 1744 RPM [0x183] (FANIN0)
    Fan sensor 2 1786 RPM [0x17A] (FANIN2)

    Temperature sensor 0 68ยฐC (154ยฐF) [0x25] (core #0)
    Temperature sensor 1 68ยฐC (154ยฐF) [0x25] (core #1)

    Thanks for any help

  • 15. theDuck  |  March 7th, 2008 at 12:49 pm

    Hi Doddie –

    I think you should consider the PCI as seperate to the core clock – there is no rule that says you have to overclock the PCI as well as the CPU, although some folks do (especially gamers). You could even just leave it at 100.

    Certainly, as Greg points out, peripherals on the PCI bus can be a bit prone to failure if you overclock it too much. My suggestion would be to avoid going over 110, and if you want to be safe, 103 should be absolutely fine.

    I’d be upping your ram multiplier – try 2.5 – this will take you to ~ 940MHz Ram speed, which the PC8500 RAM should handle just fine at your clock speed of 3GhZ – I’ve gone a bit more extreme (3.9 GhZ) and was having problems with the RAM wigging out (which, by the way, usually causes the Gigabyte Dual Bios boards to take a very long time to POST, and resets all overclocking values to default) – that’s why I dropped the multiplier back, but you shouldn’t need to at your desired speed of 3GHz.

    One thing I’m a little concerned about are your core temperatures – they seem a little high for such a moderate overclock – the maximum recommended temperature for the e8200 is 72.4 degrees celcius and you’re temps are a bit close for comfort.

    I often find that using a third party heatsink paste (like arctic silver or something similar) can reduce your temps quite significantly, or you may want to purchase a different cooler (although I think that should be unnecessary)

    If you decide to use a different heatsink compound, make sure that you clean the existing heatsink compound from your processor and the base of your heatsink first – use isopropyl alcohol (called isocol here in Australia) and a clean lint free cloth – remember to let them dry thoroughly prior to adding the new compound.

    You only need a tiny bit of compound – about the size of a grain of rice – check out the arctic silver website for more instructions.



  • 16. theDuck  |  March 7th, 2008 at 1:08 pm

    By the way folks – here in Australia the supply of the new E8XX (e8200, e8400 and e8500) CPU’s seems to have dried up. I’ve checked 6 suppliers, and all bar one (umart) are totally sold out and not expecting new stock until at least the end of March.

    In Umart’s case, they’ve upped the price of their E8200 CPU’s from around $250 to $300 – I guess it’s a case of supply and demand.

    Seems these are popular little chips – I’m currently doing a build for a client, and have ordered a Quad Core (Q6600) on the old 65nm core instead – not sure how well it will overclock but will keep you posted.


  • 17. doddie  |  March 7th, 2008 at 1:32 pm

    Thanks M for the reply ๐Ÿ™‚

    I will leave the PCI at 100 see how it goes, I do play games,
    using a factory overclocked asus 8800GT TOP.
    Would this make much difference?

    I’l also up the mem to 2.5 as suggested.

    Regarding the temp I thought it was high myself, until I googled
    Whats your thoughts on this?
    Im presuming I have a faulty sensor.

    im using stock cooler. my normal CPU temp seems to read ok Temperature sensor 1 22ยฐC (71ยฐF) [0ร—16] (TMPIN1) idle
    this reading will rise to 39c benchmarking. the 2 core readings never change @ idle or under load, so im near certain I have the
    faulty sensor.

    I will play about with the settings and see how it goes.


  • 18. theDuck  |  March 7th, 2008 at 1:41 pm

    I don’t think the PCI is going to make much of a difference.

    Those temperatures ~ 30 degrees look like the case temp, not the core temp – I think you’re reading the wrong temps. You should be reading these ones:-

    Temperature sensor 0 68ยฐC (154ยฐF) [0ร—25] (core #0)
    Temperature sensor 1 68ยฐC (154ยฐF) [0ร—25] (core #1)

    The temp sensors for the cores are on the die itself – one faulty, possible, two faulty – highly unlikely – but it’s possible that your bios may not support the e8xxx cpu’s properly, so definitely upgrade to the latest BIOS.

    The temps seem on the highish side – use a cpu testing software such as cpuburn or something similar and see what they’re reading under full load (using cpu temp, a free utility).

    If the temps are as reported, it’s unlikely you’ll damage the processor with high temps, but your system may become unstable.


  • 19. doddie  |  March 7th, 2008 at 11:44 pm

    I cleaned off old paste and applied artic silver, made sure fan was seated properly.

    I done a benchmark with everest, as you can see the results are the same, with core 1 + 2 always sitting at 68c and cpu temp at 36c case/mb at 30c


    the bios is the latest F12 that came with the MB dated jan 08

    btw: my pc is in my back store in house (UK), below average temps

    any ideas thx

  • 20. theDuck  |  March 8th, 2008 at 12:00 am

    Got me stumped Doddie! You’re prob right – faulty sensor or a motherboard incompatibility. Did you try using the cpu temp utility?

    At the end of the day I guess all that is really important is that the processor runs stable (try using orthos or prime95) ๐Ÿ™‚



  • 21. Prospero  |  March 9th, 2008 at 2:57 am

    Hey guys,

    got my E8200 @ 3.81Ghz Stable (Orthos & repeated 3d2006 runs)

    Mem is @ 475 (2,1v and 1:1) and vcore is @ 1.216 so there is really a lot of headroom on this processor.

    Sadly, I have pc6400 Corsairs and they’re not too great, so I think i’ll switching over to some pc8500’s from Crucial. I hope to see a stable +4ghz oc after that ๐Ÿ˜‰

    Coretemps (using realtemp) are +/- 31c @ idle and +/- 58 @ full load (using load-line calibration, this might also explain the somewhat low vcore (but disabling didnt seem to make any difference to overall system stability))

  • 22. Joseph Glover  |  March 9th, 2008 at 3:27 am

    Prospero nice work…

    I have a the same CPU and Crucial 8500 1066mhz RAM.. I’ve not been able to push mine further then stable 3.81ghz.

    Truth be told i’ve not pushed the FSB voltages or RAM voltages..

    My new rig is almost ready to start the OC fun.. just waiting on some MOSFET heatsinks.


  • 23. theDuck  |  March 9th, 2008 at 10:40 am

    They’re good figures everyone – congrats!

    Yowsers Prospero!! Those kinds of speeds with PC6400? That’s FANTASTIC work..

    Joseph – if you achieved those speeds without overvolting, that’s a very excellent result. What model Zalman cooling are you using?

    I’d be really interested to know how you go testing for stability with ORTHOS (download it here) – it’s by far the most punishing CPU stress tester that I know of.

    I’d also love to know both your times to calculate pi to a million decimal places (Use a program called superPi – download it here). Do you crack 10 seconds? I think you’d both get damn close.



  • 24. Prospero  |  March 9th, 2008 at 1:28 pm

    Hey duck,

    Thanx, I guess these Corsair sticks arent too bad afterall ๐Ÿ˜‰

    As per your request, my SuperPI time is 12,469s (im using SuperPi Mod, so I can also see the milliseconds). So not quite breaking the 10s barrier, but close indeed ๐Ÿ™‚

  • 25. theDuck  |  March 9th, 2008 at 1:39 pm

    That’s pretty good Prospero – I managed 12.062 secs at my 3.92GHz overclock – so we’re right on the money ๐Ÿ™‚

  • 26. Prospero  |  March 9th, 2008 at 1:43 pm

    Yup, I think I could push these sticks even further, but right now im still running the stock Heatsink… I think I’ll wait untill my Scythe Infinity gets in. Then we’ll see what these sticks can do with 2.2v ๐Ÿ˜‰

  • 27. theDuck  |  March 9th, 2008 at 1:46 pm

    Out of interest for myself and other readers, what timings are you using on those corsair sticks Prospero?

  • 28. Prospero  |  March 9th, 2008 at 1:55 pm

    The sticks run @ 5-5-5-18 right now. For some reason my motherboard wont run these sticks @ 4-4-4-12 whatever I do.. These sticks are supposed to be able to run @ 4-4-4-12 with the vdimm @ 2,1 but it wont even post at these settings.. But oddly enough they oc very well (FSB wise)

  • 29. Prospero  |  March 9th, 2008 at 2:01 pm

    And ofcourse I couldnt wait, so I lowered the Multi to 6x and upped the FSB to 500 so effectively the corsairs are running @ 1Ghz now.. Im running Orthos over-night to see how they hold up. Maybe upping the vcore for the proc to 1,25/1,3 might just do the trick for a stable 4Ghz.

    (ps, Orthos is stable for 10 minutes now with the 1Ghz clock for the mem. I would’ve expected an error by now, but so far so good ;))

  • 30. Prospero  |  March 9th, 2008 at 3:03 pm


    Orthos and 3dmark stable (for now :P) Will run stress-test for at least 12 hours now.

  • 31. Greg K.  |  March 13th, 2008 at 12:54 pm

    Quick note on all of the comments from above (sorry that I’ve started this big confusion on the PCI issue):

    PCI speed is not related to your FSB(Front Side Bus) speed *AT ALL*.

    PCI speed: 33Mhz
    AGP speed: 66Mhz
    PCI-E speed: 100Mhz (technically 99Mhz)

    While PCI and AGP devices are both EXTREMELY sensitive to an overclock and are designed to function only at their given speed rating, they always account for power and speed fluctuations to some degree. Because of this, you rarely ever need to give any additional voltage to the PCI bus, nor do you need to up the frequency. However, having said that, there are some cases when it is advantageous, and one must understand what these changes do to decide if to use them. So here goes a brief Layman’s description:

    POWER: Some power supplies (most, actually) do not deliver the juice that they promise. So a 3.3V output could easily be 3.1 or 3.25 or 3.4 even. The error is even worse with higher voltages – 5V and 12V lines. Because the CPU needs very precise voltage regulation, the transformer there is usually much better, but even then: I have my mobo set to 1.5V on the CPU (I *REALLY* do not advice that ANYONE sets their voltage that high without testing equipment or knowing what they are doing). The actual Core voltage is read a 1.39-1.42. Good range for what I need and the fluctuation does not cause any crashes. actual 1.5 would have probably caused the temps to go up WAAAY higher.

    PCI SPEED: speed of data reads/writes does not affect the amount of data transfered at once, but it does increase the number of itterations per second (Hertz), so you effectively increase or decrease bandwidth and overall amount of data that is exchanged with the devices. In PC terms, that’s data bandwidth, but in reality it’s electrical signals. So too fast = not enough time for the PCI device circuitry to process the signals (at best) OR burn out and imminent death (at worst). You’ll never damage the PC, but a good sound card costs enough to regret the mistake, and a good video card costs enough to temporarily lose your sanity over the stupid thing. So to be safe, fix the PCI-E speed to 100Mhz and leave it. If you only have a video card on your PCI-E, and MAYBE a high-end sound card, you’re pretty safe with a 10% bandwidth overclock – set things to 110. If you use cheap stuff, it won’t get damaged but may refuse to work at a 10% overclock. Or it may give errors. Try 5% or go back to 100. Biggest thing to test is your USB and FireWire cards that are connected to your PCI. PCI-E will be fine – I promise. PCI speed is automatically calculated from PCI-E or AGP. It’s AGP/2 or PCI-E/3. Simple.

    OVERVOLTAGE: Assuming you know WHY you even need to and you’re careful enough to do it in small increments, you must have some tools to do this right. Cheapest and fastest way to test is with software and built-in sensors. Do not EVER trust the front panel sensors as they sit on top of your devices, and not inside, and all new CPUs have heatsinks built-in on top, so you’ll never get an accurate readout.

    SOFTWARE: You must at least have Everest and CPU-Z. Some variation of auto fan control software is nice too, but unnecessary if your fan noise is not bothering you at full speed at all times. I just set my PC to alert me LOUDLY if any of the fans fail. Beyond that, they run at full FPS at all times. Hey, fans are cheap.

    MEMORY: ALL fast memory is actually read by motherboards as 800Mhz. That’s not a mistake, that’s just the top of the JEDEC ratings. The rest is written in the manufacturer’s “best use” specification, called the EPP Profile. Some sticks contain no such profiles, some contain as many as 4. Your memory is DDR (double data rate), which means it always runs by default at twice your FSB. FSB = 333Mhz –> DDR2-667Mhz. When overclocking, for speed considerations (unless you know what you’re doing better than my simple description), try to pick a profile that will work at your FSBx2 (memory multiplier of 1) or FSBx4 (memory multiplier of 2). If you have 1024Mhz memory, that means that FSB can be 512Mhz at 1:1 or 256Mhz at 1:2. However, if your CPU’s multiplier is, say, 8 then you end up with 512Mhzx8 = 4.1Ghz. That’s probably more than what anyone without knowledge of OCing whould do with either of the E8x00 CPUs. Lower the multi to 7, and you get 3.58Ghz – too low to go through such trouble of OCing (goal is 3.95-4Ghz zone). FSB of 256Mhz is too low to bother also because you end up with a slower speed than your CPU is designed for. So this tells you one of two things: (a) we lower the FSB and not use the memory’s full potential, while still benefiting from it’s low latency at such high speeds) or (b) you picked the wrong memory for this CPU or (c) you need to set a different multiplier for both CPU and memory and you won’t get 1:1, maybe 5:6 will do, but you’ll utilize the best that both chips have to offer. I prefer to pick the (a) option: Set FSB to 500, CPU multi to 8, memory divider to 1:1, and you will have a 4Ghz E8x00 with 1Ghz CAS4-5 DDR2 memory. The whole setup should not only fly, but also be pretty stable, so long as each core’s temp is below 60C at full long-term load, and below 50C on daily average. junction temp (combined temp of both cores) is not always the best indicator, as cores can fail seperately, but if that’s all you’re looking at, just do your best to keep that below 55C at all times. Keep in mind that most EPP profiles require a significant voltage boost for high speeds. My motherboard flashes red in the bios when I set the memory voltage to 2.2V. It thinks I’m insane, since the standard voltage is 1.8V. It’s in the frying range for most memory sticks. But it’s what my Ballistix is asking for and it won’t work at less. A LOT of heat is put out by memory with such voltages, and memory rarely has a temp sensor. So just put a fan in the case somehow (even if you have to duck tape it or wire-twisty it to the case) to blow on your memory. small airflow across the sticks is infinitely better than no airflow. If you have an extra $20, but the tri-fan memory cooler from Corsair. The advice above ONLY applies to E8x00 chips with aftermarket coolers and GOOD mobo’s. Do not try this with a stock cooler, cheap mobo, and lower grade chips. Most CPUs won’t survive the voltage requirements they’ll need and the heat generated to run FSB 500 at any multiplier. E8x00 puts out less heat, and does higher FSB on less voltage (it’s stock FSB is 333, not 200 or 266 of previous chips).

    THERMAL GREASE: Arctic Silver 5 is really great, but as long as your paste is not graphite-based, just about anything else will do. We’re not building a rocket ship here, but attempting reasonable mild overclocks. At $1-2 difference – who cares. And a tube of this stuff lasts for numerous builds, so unless you already have something sitting in your parts closet, get AS5 and shush.

    APPLYING GREASE: biggest mistake here is “more is better”. Thermal paste has either ceramic or silver dust in its base. What this means is that a thin layer is highly conductive and clogs the air pockets that normally create between a CPU surface and heatsink surface. This does wonders for heat transfer. But if you put too much, the properties reverse, and you actually get an insulator, rather than a conductor, slow-roasting your precious E8x00. Do you like yours with a “port reduction”? (pun intended) ๐Ÿ™‚ Follow the rules for application of your specific paste to the tee, but normally the way you do it is a straight line through the center of your CPU, about 1/2mm in thickness and about 1/2 of your CPU’s length, and you set your heat sink on it and twist it both ways slightly, causing trapped air to get out. Do not plop a puddle in the middle of a CPU as you will usually put too much, and air traps underneath. Also whether ceramic or silver, the paste needs time to “set”. This does not mean “actual length of time”. It means “heat cycles”. Turn your computer on and put it under mild load for an hour, let the CPU get hot. Turn it off for an hour and let the paste cool down (CPU will get cold within milliseconds, but the heatsink above it will keep the paste warm for a while). Do this about 5-6 times. To an average person it means “turn the PC off at night, and do not stress the CPU to the max for the first week”. I noticed a 2C drop with paste versus without after immediately applying it, and I’ve noticed a total drop of 10C!!!!!! after about 5-6 heat cycles and letting silver dust align (“set”) in the AS5 paste.

  • 32. theDuck  |  March 13th, 2008 at 1:13 pm

    Greg – the advice you give just keeps getting better. If you’d ever like to write a piece on utheguru about overclocking, let me know and I’ll give you a login.

    Thanks so much for all the effort!



  • 33. Greg K.  |  March 13th, 2008 at 1:14 pm

    By the way… I ran the SuperPI on my PC. Specs: E4500@3.2Ghz, 4Gb DDR2-800Mhz 4-4-4-10 1:1 (usually I run 1000Mhz at 4-4-4-12 5:6, but today I felt like I’d try this, and it’s a little slower, but not much). Vista Ultimate x64. Gigabyte P35-DS3 mobo. 1M PI calculation took just shy of 20 seconds.

    So, anyone wondering the need to upgrade: the E8200 @ 3.95Ghz for only $96 more ($204-$198 on pricewatch), provides a 67% computational time advantage. Probably more, if OC’ed a little better. And it has an improved instruction set. AND IT STAYS COOLER!

    3.95/3.2 = 23% speed difference. The time should not be 67% faster, but it is. The faster bus means more data bandwidth, so the CPU can do more (less idle time) within the same time.

    (P.S.: E4600 OC’s to the exactly same point as E4500, since multi needs to be lowered for such high FSB anyway, so I am not looking at E4600 price for this compare)

  • 34. Greg K.  |  March 13th, 2008 at 1:24 pm

    Thanks, theDuck, but I’d say if anyone wants to OC an E8200 rig, this post already offers a ton, and those who want to OCs everything, can probably find much better advice than mine in the same places where I started learning. Without naming names, there’s a ton of overclockers’ forums out there. What really drew me to this forum is interest in this specific chip, and now with everyone’s efforts, I think we’ve all decided just what it can do and how far it can OC within reason for everyday Joes. I humbly and gratefully thank everyone for this valuable input. I will be updating my rig with an E8400 soon and probably use the E4600 I have for my HTPC. It does just fine playing my HD media on my 73″ Mitsubishi TV @ 1080p. ๐Ÿ™‚ Even Team Fortress 2 runs at ridiculous fps (>120) at 1920×1200 with all settings at highest quality and AAx4 AFx16. But for my video post production, I really want the faster chip. It still takes hours to render video clips.

  • 35. theDuck  |  March 13th, 2008 at 1:28 pm

    Greg – do you have any experience with the Q6600? Preferences? Is it speedier than the e8200? I know the clock speed is lower and you have to compare apples with apples and it’s a Quad core jobby – but imagine you’re running a single threaded app – do the other optimisations in the quad core architecture speed things up processing power wise?



  • 36. Greg K.  |  March 13th, 2008 at 2:01 pm

    single thread in software development does not necesarily run on a single CPU. A single thread might still instantiate several classes whose actions can be computed in parallel. Example: Flash player is a single-thread app that runs a little faster on a dual core CPU. It’s the single *CRITICAL SECTION* that says “no other things can start in the cpu until I’m done” that only runs on a single core. However, the performance gain without specific multi-core optimization is minimal. If you worry about a single thread app that crunches numbers (read “uses memory”) then get the fastest data bandwith CPU you can (fastest FSB combined with lowest memory divider – 1:1 at highest memory speed). Latest AMD quad core beats Q6600, and even Intel offers better quads at comparable prices. So I’d think twice before I’d put a Q6600 in my system. But I cannot advise either way about specifics of Q6600 vs. E8200 for your specific tasks. You will probably win on FSB advantages alone with the E8200. But that’s my uneducated guess at best, not to be mistaken for advice at any angle.

  • 37. Matt  |  March 19th, 2008 at 6:19 am

    Do you think that with a 500mHz FSB you could get it to 4gHz and stable using only an Arctic Cooling Freezer 7 Pro, with a well ventilated Antec P190 and keeping the CPU Voltage at 1.25

  • 38. Nikos Chrisoulis  |  March 26th, 2008 at 10:08 am

    I did 4.0 and i didnt even have to worry about it. I set the system up today but i couldnt wait to overclock…..

    Didnt stress the machine, but i guess i can post as hiagh as 4.5 or something with the right settings.
    I appear quite sure that 4.0 can be very stable – great o/c!!!

    MoBo: Gigabyte P35 DS4 – this sh@t is ill!!!!!

  • 39. HooT  |  March 29th, 2008 at 8:28 pm

    My stock E8200 runs at 49deg C.

    Is this normal?

  • 40. ChrisH  |  March 30th, 2008 at 5:52 pm

    Bit of a beginner to the whole overclocking thing, but I’ve got my E8200 up to 3600mhz on air using Arctic Cooling Freezer 7 Pro and Crucial pc c6400 memory.

    Multiplier is 8 x
    FSB 450

    I realise if I had faster memory, I could probably imporve on these figures (so 2GB 8500 is my next purchase) ๐Ÿ™‚

  • 41. angelofdev  |  March 31st, 2008 at 2:16 am

    hey all iv just over clocked my e8200 to a stable 3.70ghz on an ASUS p5kc with PNY PC6400 2048mb sticks x2 with timings of 5-5-5-18

    iv got fsb at 463*8=3.7ghz
    my dram at 463*2= 926
    DRAM:FSB 1:1

    core voltage is 1.27v
    under prime95 torture test it reaches 59*C
    idle temp is 30*C on stock heatsink and fan.

    i got a 1M pi score of 12.683

    its my first over clock so im stoked about results ๐Ÿ˜€ altho im worried about temperatures

  • 42. Blackiice  |  April 2nd, 2008 at 6:26 am

    i want to buy a E8200 Tomorow .
    I will use it on a P35-DS3 mainboard + 4gb of A-Data Vitesta Extreme 800Mhz Cl4
    I heard that are 2 revision of this cpu, the latest is C1 and fixed some of the bugs, including the temperature senzor .
    Hopefully i`l run it @ at 3600 or 3700 ,i`ll be back with details . U guys have C0 revision ?

  • 43. Prospero  |  April 2nd, 2008 at 7:10 am

    Hey Blackiice.. Yea, I run a C0, but luckily I havent got the stuck sensor problem. 3,6Ghz shouldnt pose any problems, I think ure mem-sticks should do 450 easily, maybe even @ cl4 ๐Ÿ˜‰

    Good luck and let us know how you did ?

  • 44. angelofdev  |  April 2nd, 2008 at 11:48 am

    how do you know if you have the problematic C0 revision of the E8200?


  • 45. Prospero  |  April 2nd, 2008 at 11:51 am

    Use CPU-Z (cpuid) to identify your revision.


  • 46. angelofdev  |  April 2nd, 2008 at 12:06 pm

    yeah I’ve already got cpuZ and I’ve got the C0 revision but that doesn’t tell me if I have the C0 revision with the problem.
    Or doesn’t the stuck sensor tell the revision number in cpuZ?
    sorry im a bit lost.

  • 47. Starbuck  |  April 3rd, 2008 at 8:56 am

    What software are you guys using to measure you’re CPU temps?

    As I’m using core temp and when using prime 95 it says that the cpu temp is 70 degree, and it Crysis it peaks at 6065 degrees??

    By the way at the moment my E8200 is running at:
    3.2GHz, 400×8 at 1.25v
    Ratio is 1:1 with RAM at 4-4-4-12 and 2.2v

    Have I done something wrong?

  • 48. Starbuck  |  April 3rd, 2008 at 8:58 am

    Sorry its meant to read 60 to 65 degrees when playing Crysis

  • 49. Prospero  |  April 3rd, 2008 at 8:59 am

    You have 2 possibilities:

    1> U have a proc with a faulty temp-sensor. In that case you could use RealTemps to see if your tempsensor is stuck.

    2> Your heatsink is curved, meaning it doesnt cover the whole surface of your processor. Only solution is to buy a new heatsink. Or the Heatsink isnt properly seated, in that case reseating it should do the trick.

  • 50. theDuck  |  April 3rd, 2008 at 9:22 am

    Prospero – I’ve been monitoring this thread but not actively participating because I’m writing a PhD proposal :-D.. many thanks for your great answers.


  • 51. Starbuck  |  April 3rd, 2008 at 11:02 am

    Prospero, I’ve already tried reseating the Heatsink, and it had made some difference with temps. But what do you mean by curved? I don’t quite get what you’re getting at.

  • 52. Prospero  |  April 3rd, 2008 at 11:08 am

    Its possible that during the production process of the heatsink, the bottom surface (which “touches” the heatspreader of the processor) isnt made completely smooth and flat. If thats the case, then the heatspreader on the processor isnt able to transfer heat from the surface of the heatspreader to the surface of the heatsink. Even with the use of thermal-paste this would lead to insulation which is bad. Cause we want conduction and not insulation. Im not saying that this is the case with your heatsink, but Ive heard many stories of people who changed their heatsinks and had amazing gains in cooling-capacity.

  • 53. Starbuck  |  April 3rd, 2008 at 11:32 am

    Well, I’ve just e-mailed intel about getting a replacement heatsink(it cant hurt to try another intel HSF can it!). Otherwise I’ll just get a Thermalright ultra 120 as I’ve heard lots of good things about them.

    So I guess I’ll just have to see. Thanks for the help ๐Ÿ™‚

    Oh, what about lapping the just Heatsink would that make a difference?

  • 54. Prospero  |  April 3rd, 2008 at 11:37 am

    The iNtel heatsink is actually pretty nice if you have a good one. So emailing them is a good idea, probably falls under warranty. Ive heard alot of good thing about “Scythe Ninja’s” but those Thermalright are pretty decent aswell.

    Lapping the heatsink is always a good idea, since this smoothens the surface which is good for heat dissipation.

    And you’re welcome ๐Ÿ˜‰

  • 55. Starbuck  |  April 3rd, 2008 at 11:46 am

    I’ll be sure get hold of various grains of sand paper and give it a try, what kind of temperature changes should I expect?

  • 56. theDuck  |  April 3rd, 2008 at 12:00 pm

    Starbuck – with respect to Prospero, I’m tending to be a little sceptical that your heatsink is warped.. others may differ but I think it’s pretty rare to have such a major warp in a heatsink that it would cause these kind of issues and I think Intel will give you a negative response.

    I think it would be wise (so long as you have excluded the possibility that the temperature reading is fallacious) to try cleaning your heatsink as described above and apply new compound – arctic silver is my favorite. If you go to their website they’ll give you very good instructions about just how to apply the compound properly.

    Other causes may be:-

    1. You haven’t clipped the heatsink in properly on all four corners (very common).
    2. You’ve used too much heatsink compound.



  • 57. doddie  |  April 6th, 2008 at 1:58 am


    I have since overclocked my wolfdale to 3.4 Ghz (see previous post) using a new MB, I RMA the last board as there was a bit of play in 1 of the memory dimms and I was getting reboots.

    Gigabyte P35 DS3 Rev2 Bios F13a
    Wolfdale E8200 @ 3.4Ghz stock cooler
    2x 1GB Crucial Ball tracer (8500) dual running @ 4-4-4-12

    I think I have all the settings correct, (see screenshot below )
    Im new to this overclocking stuff ๐Ÿ˜‰
    The system has been running rock stable, there’s a few points i’d like to mention.

    1.My wolfdale must have the stuck temp sensor, as both core temps, never goes below 68c. (see previous post) so im ignoring these.

    2.The core voltage seems to drop when under load
    1.22v > 1.18v is this normal?
    also overall it seems to be below average users voltage 1.24 etc…
    best to leave this alone?

    3. Is CPU temp 54c a bit high, if it’s correct? tho other software shows the same readings.

    4 The memory’s voltage seems below the crucial spec of 2.20,
    tho the system is stable. should i change this?

    4. if theres anything I could tweak/change plz let me know.



  • 58. Gooralski  |  April 7th, 2008 at 6:13 pm

    I have a small question. My rig is almost the same as theDuck’s rig, except for memory which is Patriot LLK 6400 (4-4-4-12 @ 800 MHz, 2,2V). MoBo seems to be quite good for overclocking, but only one setup is running fine for me – FSB @ 400MHz, mem @ 960 MHz 5-5-5-15 @ 2.2V. When i tried to set FSB to 425 MHz and FSB:DRAM to 1:1 (850 MHz should be ok after stable work @ 960 MHz) MoBo starts twice and set back CPU to 2.66 GHz. Not sure what’s wrong, i’ve tried a lot of sets (including VCORE ~ 1.3V) and nothing. Any ideas? Thanks in advice.

  • 59. Jacob  |  April 8th, 2008 at 7:00 am

    Hi Doc,

    Thanks for the information here. Long story short: Need to overclock my new E8200 to say 3.5 or to whatever speed is more stable. I hope you or someone here can help; this is my setup:

    ARCTIC COOLING Freezer 7 Pro
    4×1 G.SKILL DDR2-800 (F2-6400PHUT-2GBHZ)
    EVGA 9800GTX (G92)
    CORSAIR-650 WidnowsV

  • 60. ed  |  April 9th, 2008 at 11:15 am

    I’am deciding e8200 or e8400 in search of higher overclock mhz and still not too hot system.Any help

  • 61. Mika75  |  April 11th, 2008 at 11:56 am

    Hey Doc, Office 200 keygen? hahah ……nice overclock mate ! ๐Ÿ™‚

  • 62. GK  |  April 17th, 2008 at 9:34 pm

    Hey guys,
    just bought an:
    Asus P5n-E SLI
    G.Skill DDR2800 PC-6400 (CL4-4-4-12)

    I thought I might OC to 3~3.5GHz (maybe more) and was wondering if I could get some pointers.

    I’ve read a bit and you guys really know what your talking about.
    This will be my first OC and I wanna make sure I get it right!!

    Any comments appreciated… ๐Ÿ™‚

  • 63. angelofdev  |  April 17th, 2008 at 11:54 pm

    you can easily get it overclocked to a stable 3.7ghz

    8 x 463= 3704= 3.7ghz
    DRAM 925mhz or 930mhz

    i find it that 1:1 FSB:DRAM ratio is the best for a stable system

  • 64. Joseph Glover  |  April 18th, 2008 at 12:03 am

    Set your cpu core to 1.25 when your hitting the 3.6+ mark.

    I dropped my 8200 into my Lanparty gig and its really capped my OC. Went from 3.7ghz on the GA-P35-DQ6 to only 3.0ghz on my GA-G33M-DS3R…

    I think its all in the voltages… any ideas?

    cheers guys.


  • 65. Joseph Glover  |  April 18th, 2008 at 12:21 am

    TheDuck, Sorry mate i hadnt read your post about wanting me to show my SuperPi and ORTHOS scores… I’ve downloaded the Apps and i’ll have a play tonight… I’ve moved my CPU into a DS2R which has capped my OC like a bitch.. now why i hear you ask would i go from the DQ6 to the DS2R?? i had to use a M-ATX mobo in my HackPro Mod.

    check it out.


    My specs and cooling are as follows:

    Intel Core 2 Duo E8200 @ 3.0 Ghz (Zalman CNPS9700-LED)
    Gigabyte GA-G33M-DS2R (*North Bridge* Noctua NC-U6 Dual Heatpipe, *South Bridge* Thermalright HR-05 IFX)
    4GB Crucial Ballistix Tracer 8500C5 (Antec SpotCool Fan)
    Nvidia BFG 9800GTX OC 512MB
    Mac Pro Case ( 4 x Noctua NF-P12 120mm)

    check out the mod build:


    I’d really like to push my CPU back upto a stable 3.66!

    lets make it happen.


  • 66. Kijaszek  |  April 18th, 2008 at 5:01 pm


    4GHz!! ๐Ÿ˜€ This is brillinat CPU

  • 67. Phil  |  April 20th, 2008 at 6:53 pm


    Mate, the current version of CoreTemp assumes a value incorrectly that makes it report all temps for the e8x00 series cpus incorrectly…

    What you want is realtemp, which as I understand it estimates said value a little closer to the mark, and thus reports the temperatures more accurately.


  • 68. Cogman  |  April 27th, 2008 at 12:27 am

    Hey, just wanted to say a big thank you for your article. I was desperate for a new processor (as Visual Studio compiling time is driving me crazy!) and I was looking at either the e8200 or the q9300, but after reading about how easily the e8200 overclocked I went straight out and bought one.

    I got 3.6Ghz from 450×8 with stock voltages. It was so easy and heat is at 40/60. Everything seems stable no matter what I throw at it, Orthos or Prime95. I’m running super pi in 12.9 seconds, so VERY impressed, beating my old e4300 by 20 seconds. I had so much trouble overclocking my old e4300 at all, so this thing has made my day.

    Thanks again

  • 69. theDuck  |  April 27th, 2008 at 7:45 am

    Thanks Mark – small world – I came across your site too a couple months back.



  • 70. mix  |  May 1st, 2008 at 5:08 am

    I did a stress test with Orthos on my stock 8200 (stock cooling) and got the following temps: both cores stay at 39C idle, after about a minute of stressing one core sits at 52C and the other slowly starts to climb to about 45-46C.

    Is this normal to have such a difference in temperature between the cores?Is the second cores temp sensor faulty?Would overclocking to 3.2ghz (400fsb) using 2x1GB Kingmax pc6400 ram be a good idea using the box intel cooler (my mobo is a Gigabyte EP35-DS3R) ?

  • 71. theDuck  |  May 1st, 2008 at 6:35 pm

    @Mix – I’d be suggesting you check out arcticsilver’s website and have a look at their instructions for that core – they recommend laying two lines of heatsink, as the two cores are seperated by around 7mm on the die (according to the cut-out view on that website)

    So.. my most likely interpretation of your ‘issues’ (although both temps are quite reasonable) would be that one core isn’t getting as effective contact with the heatsink as the other.

    As for overclocking with the stock heatsink – 3.2 should be absolutely well and truly achievable. With the stock heatsink I obtained stable O/C of 3.6+.. your temperatures seem reasonable so go for it. As for using PC6400, depending upon the quality of the RAM you may find that the capabilities of your RAM might restrict your O/C to around that 3.2 level – if you find that your motherboard has a particularly long reboot / post after your overclock and clears all your settings back to default the most likely culprit is the RAM.



  • 72. absy  |  May 2nd, 2008 at 6:58 pm

    E8200 @ 3,4Ghz 1,2V bios, 1,18v in charge (watch in OCCT, hwmonitor etc.). My crucial pc8500 is at stock 1066 5-5-5-15, but for stability, I need to push the fsb and mch voltage +0,05V with the ga-p35-dds4.
    For those that it can help.

    temp. core 63ยฐ full, ~50ยฐ idle.

  • 73. mix  |  May 4th, 2008 at 12:40 am

    I changed the thermal compound with the AS5 but the temps stayed the same (39 idle on both cores, 55 one and 46-47 the other one in full load).

    So now I’m running the E8200 at 3,2Ghz, stock voltage, the memory at 800Mhz, stock timings and stock voltage (Kingmax pc6400) and the temps are 39 idle and 58-59 one core, 51-52 the second core in full load. Running Orthos for 30 minutes now and all is well. Thanks for the help ๐Ÿ˜€

    By the way which program do you use to monitor the temps? I use Real Temp and I hope it’s right cuz Core Temp is giving me about +10deg above real temp. Also Easy Tune 5 says 52deg CPU Temp in full load. Is that a good reading or should I stick to real temp?

  • 74. OCnewbie  |  May 7th, 2008 at 2:30 am

    hi nice article! im thinking of building a pc, buying parts as i can afford them, the basic spec will be:

    Gigabyte GA-N650SLI-DS4L
    Intel Core 2 Duo E8200
    Kingston 2GB DDR2 PC2-6400

    and because i am cheap (uk prices are really expensive) i would like to beable to overclock the E8200 even if it is just up to 3.2Ghz i will be happy 3.6Ghz would be amazing though.

    if i was to overclock the cup to either of these speeds what bios settings would you recomend? keep in mind that i am new to this so if you could keep it as simple as possible the steps i would have to go through i would be very greatful.

    p.s i know i would need a better cpu cooler so im thinking of getting a Arctic Cooling Freezer 7. i know its only a small overclock but it will help with overall system temp aswell.

  • 75. theDuck  |  May 7th, 2008 at 3:22 pm

    OCNewbie – if I were you I’d ditch the idea of buying a cpu cooler and buy better RAM instead – as mentioned above, PC8500. That way you won’t have to muck around with overclocking the RAM too much (or at all), which can be very tricky for beginners as these gigabyte motherboards tend to inexplicably reset all your changes if the RAM is going to0 quickly.

    All your going to need to really do is drop the RAM:FSB ratio to around 1:1 or 1.25 to 1, slightly up the CPU voltage (as mentioned in my article, above) and up the CPU clock to whatever it will handle – 400 will get you 3.2GHz and you will find that the stock CPU cooler will handle that no problems whatsoever.

    With PC6400, and a RAM:FSB ratio of 1:1 you’ll get to 3.2GHz without any problems. With PC8400 and a ratio of 1:1 you’ll get in excess of 3.6GHz without any problems, with the stock cooler.

    Unfortunately I can’t really offer any more specific advice as motherboards differ.


  • 76. OCnewbie  |  May 8th, 2008 at 2:31 am

    ok. thank you for the help, ill see if i can get better ram even though im still happy with 3.2GHz it would be nice to have better ram incase i want to go higher than that in the future.

    right so i have looked around a bit and i have found this


    its only a little more expensive than what i was going to use before anyway.

    what do you think?

  • 77. Joseph Glover  |  May 29th, 2008 at 9:10 am

    Hello again boys..

    So i’m back at the Ocing chair taking on my M-ATX DS2R mobo (my OC had been limited to 3.0ghz) well it turned out it was a school boy error… DDR2 RAM running at its default voltage of 1.8v my crucial Ballistix 8500 requires 2.2v so with the DDR2 set in the BIOS with a 0.3v voltage push I’m running at 2.16v for some reason 0.4v wont allow me to boot..

    I’m at the 3.33ghz stage! not quite the 3.7ghz of the DQ6 but im on my way.. I’ve added another 0.1v to the FSB seems to help.. my vcore is running at 1.17v no to bad..

    I’ll keep ya posted.


  • 78. Lu  |  May 31st, 2008 at 3:47 am

    Hi! I have Intel 8200 CPU and exact same motherboard as yours. My Memory is Consiar Dominator DDR2-1066 (2 x 2GB) – TWIN2X4096-8500C5DF. I tried to use your recommend settings, turned off all possible speedstep settings, but couldn’t overclock any. My CPU-Z always shows 2666.8 Mhz with 1.126V core voltage even though I had ajusted it in BIos accordingly. Can u help please…?

  • 79. Robin  |  June 2nd, 2008 at 11:12 pm

    Ok, thanxx for the info, and the comments ๐Ÿ™‚

  • 80. peterd  |  July 9th, 2008 at 6:29 am

    Sorry thisis not 00% on topic but was wondering if anyone had answers for this. I have a wolfdale e8400 fairly new just assembled. system is pretty stable thus far and I wanted to OC it a bit after adding a new HS and fans. Odd thing is when I run CPUID it is detecting my processor correctly but saying it only has one core. It also doesn’t display my FSB speed. other utilities like coretemp also seem be seeing my processor as only having one core.

    The BIOs POST and device manager both show 2 processors,

    Are the utilities wrong or do I have a dead core or something?

    Thanks for any help.

  • 81. salient  |  July 12th, 2008 at 1:22 am

    Hi Doc,
    Can you help me please? I’m newbie to overclocking. Even simple push to FSB420 seems unable to boot to POST. I have the following setup:

    Asus P5Q-E
    Intel E8200 + stock fan
    OCZ DDR2-800 CL3 Titanium 2GB Kit (OCZ2T800C32GK, or equivalent to 2x OCZ2T800C31G)
    PC Power & Coolings 750W

    I read the OCZ RAM can even go up to 561.9Mhz (5-5-5-15) or 476.1MHz (3-4-4-15), and the E8200 can go up to 3.9GHz.
    I am not looking for that extreme setting, but what I have now is FSB400, which is really minimal o/c. I believe there is plenty more headroom but do not know which is causing the problem. CPU core and RAM voltages are 1.25V and 2.3V respectively. PCI freq is 100.

    I read through this whole post, including all the 80 comments, and tried the settings as mentioned above, but still not working. I wonder what is wrong. If you need more info on BIOS, I will be glad to include them.

  • 82. ReVaL  |  July 28th, 2008 at 11:11 am

    Running E8200 @ 4ghz
    Idle CPU: 39C, Idle System: 42C
    GA-EP35-DS4 rev 2.1, BIOS F1
    Patriot PC6400 Extreme Performance @ 1000Mhz, 5-5-5-15
    (rated as best value RAM on tomshardware)
    Arctic Freezer 7 Pro + Arctic Silver 5
    Antec P160 Case (awesome cable management for good airflow, front + back fans)
    OCZ ModXStream Modular 900W PSU

    BIOS settings:
    CPU Host Clock Control
    CPU Host frequency: 500
    C.I.A.2: Disabled
    System Memory Multiplier: 2 ( 1:1 ratio )
    DRAM Timing Selectable: Auto
    System Voltage Control: Auto

  • 83. ReVaL  |  July 28th, 2008 at 11:21 am

    RAM Idle temp @ 48C

  • 84. ReVaL  |  July 28th, 2008 at 11:43 am

    CPU vcore @ 1.3750

  • 85. ReVaL  |  July 28th, 2008 at 6:57 pm

    Stable @ 3.8 Ghz, RAM @ 950Mhz 5-5-5-15
    Load 58C

  • 86. angelofdev  |  July 28th, 2008 at 7:12 pm

    to: salient

    have you tried upgrading your motherboard firmware?

  • 87. RicardoK  |  August 2nd, 2008 at 1:43 pm

    can any1 plz tell me how to change the RAM latency n FSB ratio

  • 88. Ant Cole  |  August 16th, 2008 at 8:38 am

    Hey Guys.

    Ive been wanting to overclock my processor for a long time now, and i think now is the time. The thing is i dont really have a clue how to do it. I have read this guide but im a very cautious person and obviously we have different components so, it wont be the same.

    But hopefully you lot can help me overclock my processor by telling what to do step by step. My components are; Gigabyte p35 Intel P35 (Socket 775) DDR2 Motherboard, Leadtek Geforce 8800 GT 512MB, Coolermaster real power 520w power supply, Corsair 2gb DDR2 X,S2-6400C5 TwinX 2x1GB and the intel core duo e82000 LGA775 wolfdale 2.66GHz.

    Thank you very much, and please respond with a step by step guide to help me.

    Cheers again,


  • 89. TJ  |  August 22nd, 2008 at 4:11 pm

    So For anyone still using this post im having a major problem with my CPU Core Temp.
    I am running my E8200 at 3.2GHZ
    My Bios Settings are as follows
    Robust Graphics Booster- Auto (I only have a Nvidia 9600GT)
    CPU Clock Ratio – 8x
    Frequency – 3.20Ghz
    CPU Host Clock – Enabled
    CPU Host Frequency- 400
    PCI Express Frequency – 100
    CIA2 – OFF
    Performance Enhance – Standard
    System Memory Multiplier – Auto
    Memory Frequency – 800 1000
    System Voltage – Auto

    What my PC has in it is as follows
    Gigabyte GA-P35-DS3L
    Intel Core 2 Duo E8200
    X2 2gb cards of Super Talent STT DDR2-800 PC6400 RAM
    1 GeForce 9600GT graphics Card
    1 410watt Powerman PSU
    1 Western Digital 260GB SATAII HD
    8 Various Fans
    and my tower is a mid class tower

    My problem is that my pc runs at an an idle of about 43C-45C
    But small tasks such as opening 3 or 4 tabs in I-Explorer or
    burning a disc give me spikes of about 55c
    The Real problem though is when I run Prime 95 Stress Testing
    I get Huge readings of 78-82C at 100% CPU Usage
    I cant seem to find a way to cool it down.
    I recently changed my fan layout and will describe it in a moment
    is it possible to be blowing air the wrong way or in the wrong places
    to cause insufficient cooling? I know my pc can run atleast a safe 3.2
    GHz I just dont know what i’m doing wrong.
    BTW I use the Program ‘SpeedFan’ to moniter my pc’s temperature
    my Fan layout is as follows
    1 little Fan that came with & is attached to my Graphics card
    1 CPU Fan, the stock one that comes with the E8200
    3 Case fans, one 120mm Antec ball bearing fan on the back
    blowing air out of my pc, 1 ARX DC Brushless fan blowing out the side
    of my pc, pulling air away from my graphics card, i had to mount it
    funny because of the huge whirlpool shroud thingie inside my pc that
    cones down on my cpu is taking up allot of space, so only half of the
    fan is actually exposed to blow air out the other half is covered. and
    the final case fan is a tiny little thing on the front of my case blowing
    a very small amount of air in, its almost useless, but its noiseless so i
    figured hell if its more air why not.
    1 super mini little asus silver heatsink fan thingie from an old pc or
    graphics card i think, thats mounted right ontop of the ‘Gigabyte NB
    and the final 2 are stock with my PSU and are both blowing air into the
    pc Casing.
    Sorry for writing so dam much i just figured with enough information
    I could get the right type of help. Again my problem is these insanely
    High spikes and readings i get when running Prime 95 or even PCMark 05.
    Hell i even get some decent spikes to 66C when running 3DMark 06.
    What can i do to cool this puppy down. I know for dam sure shes clockable
    to atleast 3.5Ghz with what i have, atleast she better dam well be or
    my $1200 didnt get my S**** haha. HELP PLEASE!

  • 90. UrBaNbOgARt  |  September 16th, 2008 at 7:25 am

    try using a program called real temp to monitor temperatures of e82oo
    mines running 3.2 @ core1 32 idle core 2 21 idle will read higher if using a non compatible program.
    this was mentioned earlier on by someone i believe

  • 91. TJ  |  September 16th, 2008 at 10:21 am

    Hey thanks, yeah if they did mention it earlier its likely i missed it… thiers a lot of posts here im not sure i read them all thoroughly, so i added some 3 extra fans inside the case, they arnt pulling air in, thier sort of blowing it out but from across the case, thier stacked up one ontop the other to maximize the air they put out, but like i said they arnt pulling air in or pushing it out, mostly thier therc

  • 92. TJ  |  September 16th, 2008 at 10:23 am

    Hey thanks, yeah if they did mention it earlier its likely i missed it… thiers a lot of posts here im not sure i read them all thoroughly, so i added some 3 extra fans inside the case, they arnt pulling air in, thier sort of blowing it out but from across the case, thier stacked up one ontop the other to maximize the air they put out, but like i said they arnt pulling air in or pushing it out, mostly thier to help circulate the air. What i wanna know is if its worth the extra strain on my Power supply and the extra noise, the temperature drop from them is only 2/3 degrees on idle n 1/2 when running PRIME 95. Is it worth all that extra buzz?

  • 93. UrBaNbOgArT  |  September 19th, 2008 at 7:01 am

    probably not, i have Thermaltake M9 with 2x 12cm fans in front on as an ehaust at the rear, akasa evo cooler with a 90 on it and a 8800gt with a thermalright gt cooler on it with a 90 and mine isnt really that loud , i guess it is what ever you are used to.

  • 94. Vitamin B12  |  November 8th, 2008 at 12:25 am

    Having read the thread I am still having problems getting my chip to OC past 3.7 ghz stable. It does not seem to be the RAM as this can be OC to 1153 Mhz with 5,5,5,15

    System: Windows XP
    CPU: E8200
    MB: DFI Lanparty DK X38 TR2
    2 gb RAM: Dual channel DDR2 OCZ Reaper – 1066Mhz
    Stock Cooler

    Only Muti core enabled
    FSB: 465 @ 3720Mhz
    Multiplier 8
    CPU: 1.28v
    VTT: 1.25v
    RAM: 2.35V (5,5,5,15 Manual timings) 300/800 running at 1117Mhz
    NB: 1.555v (Temp 35 Deg)
    SB/PPL 1.51
    PCIE 101
    Clockgen: 3.45v
    GTL0/2 0.667x
    GTL1/3 0.667x
    NB GTL 0.67x
    Droop enabled

    VID 1.2250

    Idle CUP temp 42 deg โ€“ Smart Guardian + Real Temp

    The problem seems to be with FSB โ€“ If I raise this on a multiplier of 6 for example with the RAM 1:1 over 465 the system becomes unstable. Therefore it is not the RAM.

    After searching the web I have found some general voltages to stick by:
    Intel recommends:
    VVT MAX 1.45v (1.34 seems to be the max recommend here)
    CPU MAX 1.45v (though most users recommend 1.35 max)
    Max temp 85 deg

    PCIE MAX 110
    SB CPU PLL MAX 1.65v
    NB voltage unknown โ€“ Most figures seem to be around 1.55v and temp dependant โ€“ (any ideas here?)

    I have tried increasing core voltage a little but have the same problems i.e

    Windows wont load – Freezes at black loading screen or Blue entry screen or if it does load at 470 FSB then Call of Duty 4 crashes with a stuttering electronic sound

    Can anyone recommend what steps I should take to OC to 4Ghz? I some how need to stabilise a higher FSB it would seem, but u guys may have over ideas as Im pretty new to the game.

    Please let me know if I have missed any info here, any ideas welcome.


  • 95. ali  |  November 27th, 2008 at 6:53 am

    My E8200 on IP35pro overclocked to 4160Mhz VCORe set at bios 1.425 and idle in windows 1.41 onthe full load with Orthos fft stress for one H vdrops to 1.37
    temps idle is 24 and on the load 58C
    520 * 8=4160Mhz CPU
    Mem=1040 4-4-4-8 Crucial 2GB
    MB=IP35Pro Bios16 FSB=2080Mhz
    VGA=GTX260 elsa overclock to((714core/2360mem/1539shader))
    3dMArk 06= 17800 points
    sys stable for 24/7

  • 96. Marek  |  December 11th, 2008 at 6:38 am

    I’m having a little concerning thoughts about my OC. Thing is that before OCing i got ~11500 score with 3dmark06, i OC’ed my graphics card and score went up a little, but now that i have pushed my CPU and Ram up, score went down to 9500! yes that’s right..i pushed my e8200 to 3.2ghz and memory(800Mhz) to 900Mhz..I can’t belive i over did it? fact is that when i took off he OC, the score was even lower- 9k. Have i ruined my CPU or is 3DMark messing with me?
    PS: PCMark scores went up more than 1k (it’s similar test but tests more hole PC not only graphics card)

    any thoughts? thanks

  • 97. Marek  |  December 11th, 2008 at 6:41 am

    one other thing…i can’t really go up from 3.2GHz as my memory will go too high..as it is 900 right now, can it handle more? as it is 800 stock? if it does, then how? when i pushed it to 3.4GHz PC didn’t boot. Temp seems fine to me…Orthos gives no errors. if i only could put Memory Multiplier less than 2.0…

  • 98. Marek  |  December 11th, 2008 at 6:45 am

    And the really LAST thing (sorry about that)

    How much should i increase voltage of my CPU and memory? (CPU at 3.15GHz and memory at 900MHz)

  • 99. Diego  |  December 15th, 2008 at 8:10 am

    Hey I’m new with this OC’ing things and just boost my E8200 at 375 FSB to achieve 3000Mhz, I can’t reach no more because of RAM (Kingston Value Ram DDR-2 667) but I’m happy with results! ๐Ÿ˜€

    Anyway a question, what are normal temps for this processors, Everest Ultimate shows me 35ยชC for processor and 48 for Cores @ Idle and 59-51ยบC at full usage for Cores… so what is a good temp for this one pls.

  • 100. Diego  |  December 15th, 2008 at 8:19 am

    Asus P5K – E8200 2.66ghz @ 3.06 Ghz-Kingston ValueRam DDR2 – 667 @ 752mhz – HD 3870 OC 820mhz GPU, 1200 Memory (stock coolin) – OCZ Steatlh 600W – Tacens Sagitta II Tower -Fans 1x40mm (side) 2 x 120mm 60+cfm (FnR) – 80mm layed down the graphics ๐Ÿ˜› (it’s true).

  • 101. Diego  |  December 15th, 2008 at 8:20 am

    its 400 mm the side one

  • 102. SkyShadows  |  December 16th, 2008 at 4:52 am

    hi allz… theDuck i have an answer… first time overclocking my system… so lets see

    i have an e8200 processor 2×1 GB of Kingston pc6400 800mhz RAM, a 9600GT videocard and an asus P5N-D motherboard…

    i was wondering how much can i overclock my processor with this configuration and what would be optimal from your point of view…

  • 103. Diego  |  December 16th, 2008 at 4:54 am

    nothing happens as long as u dont go over 1.250 volts for the cpu, try lowering ram to 667 and OC FSB at 400+ to achieve 3.2Ghz Processor speeds… sounds good ๐Ÿ˜‰

    As said as long as u dont touch voltage no worries then.

  • 104. Joseph Glover  |  December 18th, 2008 at 6:18 am

    Me again..

    I’m running on a DFI-X48-T2R now and as my M-ATX DS2-R blew up my Crucial Ballistix tracers I RMA’s them for some standard Crucial Ballistix 8500. They run on 2.0v compared to the 2.2v required for the tracers I’m happy.

    I’m back in the OC’in chair once more in search of the 4ghz grail. I’m at 3.6ghz running at 1.28v-core 1:1 RAM @

    I’m booting, running the CustomPC stress suite running a loop of 3Dmark06 and then an Everest RAM stress test.. When it’s done doing that i take it as stable and reboot for a higher OC.

    I wanna get my RAM as close to 1066 without going to far over.. I’m sure my Ballistix could pull off a 1100mhz OC but I really dont wanna push my luck.


  • 105. John  |  December 21st, 2008 at 12:19 am

    Hi guys. I have a e8200, ip35 pro and 2gb of ballistix ram and a zalman cooler. Looking on oc’ing to 3.2-3.3. IM new to overclocking, so could somebody give me a complete layout of the bios configurations i would need to make to give a successful overclock.


  • 106. HackJoe  |  December 23rd, 2008 at 10:13 pm

    John, I’m not aware of the Abit bios layout. so you need to list all options similer to this.. this is a BIOS template of the DFI X48 board i run. (taken from Clunk.com.

    CPU Feature
    Thermal Management Control: Disabled
    PPM(EIST) Mode: Disabled
    Limit CPUID MaxVal: Disabled
    CIE Function: Disabled
    Execute Disable Bit: Disabled
    Virtualization Technology: Disabled
    Core Multi-Processing: Enabled

    Exist Setup Shutdown: Mode 2
    Shutdown after AC Loss: Disabled
    CLOCK VC0 divider: AUTO
    CPU Clock Ratio Unlock: Disabled(cant enable it.. doesn't this just add .5 multipliers to those CPU's that use it?
    CPU Clock Ratio:8x
    Target CPU Clock:3200MHZ
    CPU Clock:400MHZ
    Boot Up Clock:AUTO
    DRAM Speed:400/1066
    Target DRAM Speed:DDR2 1066
    PCIE Clock: 100mhz
    PCIE Slot Config: 1X 1X

    CPU Spread Spectrum:[color="Navy"] Disabled
    PCIE Spread Spectrum:[color="Navy"] Disabled
    SATA Spread Spectrum:[color="Navy"] Disabled

    Voltage Settings
    CPU ViD Control:1.28750V
    CPU VID Special Add:AUTO
    DRAM Voltage Control:2.000V
    SB Core/CPU PLL Voltage:1.510V
    NB Core Voltage:1.367V
    CPU VTT Voltage:1.100V
    Vcore Droop Control: Enabled
    Clockgen Voltage Control: 3.45v
    GTL+ Buffers Strength: Strong
    Host Slew Rate: Weak
    GTL REF Voltage Control: Disable
    x CPU GTL1/3 REF Volt: 113
    x CPU GTL 0/2 REF Volt: 100
    x North Bridge GTL REF Volt: 100

    DRAM Timing
    Enhance Data transmitting: AUTO
    Enhance Addressing: AUTO
    T2 Dispatch: Disabled

    Clock Setting Fine Delay
    Ch1 Clock Crossing Setting: AUTO
    DIMM 1 Clock fine delay: Current
    DIMM 2 Clock fine delay: Current
    Ch 1 Command fine delay: Current
    Ch 1 Control fine delay: Current

    Ch2 Clock Crossing Setting: AUTO
    DIMM 3 Clock fine delay: Current
    DIMM 4 Clock fine delay: Current
    Ch 2 Command fine delay: Current
    Ch 2 Control fine delay: Current

    Ch1Ch2 CommonClock Setting: Auto

    Ch1 RDCAS GNT-Chip Delay: Auto
    Ch1 WRCAS GNT-Chip Delay: Auto
    Ch1 Command to CS Delay: Auto

    Ch2 RDCAS GNT-Chip Delay: Auto
    Ch2 WRCAS GNT-Chip Delay: Auto
    Ch2 Command to CS Delay: Auto

    CAS Latency Time (tCL):5
    RAS# to CAS# Delay (tRCD):5
    RAS# Precharge (tRP):5
    Precharge Delay (tRAS):15
    All Precharge to Act: AUTO
    REF to ACT Delay (tRFC): AUTO
    Performance LVL (Read Delay) (tRD): AUTO

    Read delay phase adjust: Enter

    Ch1 Read delay phase (4~0)
    Channel 1 Phase 0 Pull-In: Auto
    Channel 1 Phase 1 Pull-In: Auto
    Channel 1 Phase 2 Pull-In: Auto
    Channel 1 Phase 3 Pull-In: Auto
    Channel 1 Phase 4 Pull-In: Auto

    Ch2 Read delay phase (4~0)
    Channel 2 Phase 0 Pull-In: Auto
    Channel 2 Phase 1 Pull-In: Auto
    Channel 2 Phase 2 Pull-In: Auto
    Channel 2 Phase 3 Pull-In: Auto
    Channel 2 Phase 4 Pull-In: Auto

    MCH ODT Latency: AUTO
    Write to PRE Delay (tWR): AUTO
    Rank Write to Read (tWTR): AUTO
    ACT to ACT Delay (tRRD): AUTO
    Read to Write Delay (tRDWR): AUTO
    Ranks Write to Write (tWRWR): AUTO
    Ranks Read to Read (tRDRD): AUTO
    Ranks Write to Read (tWRRD): AUTO
    Read CAS# Precharge (tRTP): AUTO
    ALL PRE to Refresh: AUTO

    Also what speed balistix did you buy? Are they red or Orange? 6400 or 8500?

    You should be able to hit 3.2ghz very very easily.. I’m currently running at 3.8ghz pushing for 4ghz later today.


  • 107. Simon  |  January 8th, 2009 at 3:51 am


    I did my first overclock with my E8200, and I get so far 3.6ghz (450 x 8), with a Vcore of 1.15375v. I have mems at 900Mhz, Reaper HPC PC2-8500 @ 5-5-5-15..

    My min cpu vid is like 1.08, so I think I’m kind of lucky.

  • 108. Joseph Glover  |  January 8th, 2009 at 6:25 am

    Nice one Simon,

    3.6ghz was my limit at a lower v-core. Raising the v-core toward 1.33v will see your OC approach 4ghz with stability. I’m sat at 3.8ghz atm… rock solid and even with a vcore of 1.31v my temps are rock bottom… 33’c underload! 29’c idle (but im guessing thats cos the UK is -5’c atm)

    Looks like you’ve got a good one there. Would be very interested to see if you ht 4ghz.


  • 109. Wii Ninten  |  February 20th, 2009 at 11:42 pm

    Hi , i have question for you mate,
    Im currently using a Dell XpS Intel Duo core E8200 @ 2.66 GHzRAM 3.25 GB 800, how can i overclock my PCvia BiOS( my BIOS revision is 10.0.12 newest one)
    I quite didnt get the setting right , Please help me

  • 110. Joseph Glover  |  February 21st, 2009 at 3:40 am

    Hi Wii,

    I’ve never used an XPS but i hear their great gaming machines.. I’m not familier with BIOS layout but the basics are the same regardless of the hardware.

    You need to find the part of the BIOS that allows you to change the FSB RAM Strap and Voltages. A simple OC should see you only changing these options. Set your RAM to 1:1 (you have an odd ammount of ram, why? how many DIMMS are you using? the less the better) ensure the RAM is running at its Rated voltage and the strap it 1:1.

    Your gonna be limited some what because of your 800mhz RAM but as the stock is 333/800 (Strap) changing that to 400/800 and increasing your FSB will see you salfy increase your clock untill you hit 400fsb. (by safly i mean you wont kill your RAM)

    400×8 = 3200Mhz Quite a nice overclock.. you should be able to do with a minimal raise in v-core. 1.25v is ample and safe.. 1.25v saw my E8200 run at 3.6Ghz it took 1.44v to hit 4Ghz.

    Take a look around your BIOS, what sort of cooling are you using? are you temps low? set your RAM to 1:1 and increase your FSB bit by bit.

    LOL… pretty much read the article up the top.

    Good Luck.


  • 111. Wii Ninten  |  February 21st, 2009 at 12:47 pm

    the Bios interface look like this one in the video(at 5:10)

    and my cpu-z scan : http://img4.imageshack.us/img4/3605/cpuz.jpg

    i will give it a few try before i got any information from u

  • 112. Rabih Nicolas  |  March 24th, 2009 at 1:38 am

    I have this CPU on my HP DV7 notebook. Is it safe to overclock notebooks in general? Any help you guys can provide is much apreciated!

  • 113. Turbo  |  June 9th, 2009 at 5:49 pm

    I have core 2 duo E8500 3.13 Ghz, 8GB DDR2 Kingston Hyper X Dual channel ( 2 , 4GB modules) , mother board is Asus P5QL-Pro, Raidmax Sirus casing. 160 Gb WD raptor 10k rpm. plus a 8800gtx card. need some tips to O’C.

  • 114. John  |  June 24th, 2009 at 12:58 pm

    Just bought my E8200, darn 8400 no longer stocked at MicroCenter. I’m taking a systematic approach and first establishing baseline thermal characteristics while I wait for thermal paste to settle.

    Using orthos 2004 johnny lee and realtemp i find

    idle min 40 42
    idle max 43 49

    orthos 54 57 under load

  • 115. Wim Lane  |  July 2nd, 2009 at 8:01 pm

    Hi, I just got my Asus P5KC mobo with an E8200 already attached to it. I bought it second hand, the dude was saying he got it stable at 3,2Ghz. There are 4 bars of 1 gig 800Mhz memory and I couldn’t get it any further either until I reduced the 4-4-4-12 settings to 5-5-5-15. Now I got it stable at 3,53Ghz, running the default multiplier and 440Mhz fsb. I cant change the divider, so the memory is holding down now. No problem, 3,53Ghz is nice for this setup I believe; game’s are running perfectly and it supports the GTX260 OC just as nice.
    Temps are 40 degrees celcius idle and on load, 55 tops; I have a zalman cooler, a 7700 I believe.

  • 116. AngelofDev  |  July 2nd, 2009 at 8:31 pm

    Hey, Wim Lim. I have a P5KC also with an E8200 in it. I have managed to take it to a Stable 3.73GHz with a Zalman CNPS9700NT.

    Temps were a stable 31*C on idle and 45*C on load. (Prime95)

    I have now got it under water cooling and took it to 3.8GHz
    Temps were a stable 30*C on idle and 49*C on load. (Prime95)

  • 117. AngelofDev  |  July 2nd, 2009 at 8:35 pm

    I forgot to add, everything else is on default settings the only thing I have changed is the FSB speeds.

  • 118. Silent Scream  |  July 16th, 2009 at 1:28 am

    For those new to o’c ing there are some things to keep in mind before venturing out and killing your precious new system.

    First of all the stock Intel Hsf, great paperweight but unsuited for cooling an overclocked system. Buy a decent after market cooler like the TT big type or an equivalent.

    Second. Overclocking means an increase in heath output. To reach a overclock of 20% or more you usually need to increase the core voltage to gain a stable system. So make sure your case has sufficient cooling. This means that both intake and outtake should be balanced. So you would want a 50/50 balance approx. Eighter underpressure or overpressure will lead to high temperatures and poor oc performance

    Currently running a 7750 @ 3.3/ E 7200@ 3.4 and a E 8200@ 3.2 (just slapped it in and raised fsb to 400)

  • 119. Kogeltje  |  July 28th, 2009 at 3:05 am

    I got my E8200 at 4,0 Ghz, 500FSB @ 8x Multiplier. Vcore 1.3750

    Stable with IntelBurnTest


    Asus P5E ( rampage Formula bios)
    E8200 (lapped)
    4Gb Crucial ballistix tracer DDR2-800 @ 1000 Mhz
    XFX 4890 Black edition @ stock speeds

    here is a pic of Superpi:


  • 120. Zboe  |  August 2nd, 2009 at 3:06 am

    E8200 at 4.1 Ghz here with OCZ reaper 1066 (2×2 gb) memory, on a Gigabyte EP45-UD3R mobo. Bus speed is 513 on 8x multi. Good chip and for $50.00 cheaper than a 8400.

  • 121. Steve  |  February 12th, 2010 at 2:29 am

    Hey guys, I’m having a similar problem that a few ppl are having on here and have not been able to find an answer scrolling through. Doddie, kogeltje and salient. Would really like to hear the solution to your problems if you found them, I have a E8200 Clocked at 3.4Ghz at the moment but it just refuses to clock any higher at all! Not even 426*8!!!

    Mobo: Asus P5QL – Pro
    CPU: E8200
    RAM: 4×1026 Crucial ballistix PC8500 1066Mhz
    GPU: Asus 9800GT

    Core temps
    38C Idle
    47/48C under load.
    So i know its got pleanty more to give!!!

    Vcore: 1.25
    RAM: 2.2
    NB: Auto (but even at @ 1.4 no change in stiuation)
    SB: Auto

    Bios images of settings I have used and still not love,
    CPU-z and asus EZ tune images

    Ok so im stumped. I have raised my Vcore, FSB termination volatage, FSB strap to max to lower NB latency NB voltages, SB voltages, higher latency on ram, higher Voltages on ram and load line calibration to protect Vdroop.
    Im still no higher than 3.4GHz
    Doc, if you can help me i’d appreciate it. Is there something real simple im missing?

  • 122. Steve  |  February 13th, 2010 at 12:06 pm

    Also what should I be setting my GTL ref at? I understand how it works, not too sure what it does though… CPU GTL at .62x? Its currently at auto.

  • 123. Keanu  |  May 27th, 2010 at 1:38 pm

    hi i tried overclocking it but i only get 2.72.
    the memory multiplier is 2.40
    the cpu speed is 340 MHz(340*8.5)
    what should i do next?

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