Help me OC my E4300!

I got a E4300 which is a week 45A with a Asus P5N-E SLI mobo and Corsair XMS2 PC2-5400 RAM.

I can overclock to 2.8GHz no problem without upping the vcore (1.325v) by setting the CPU multi to 8x and FSB to 350. RAM is synced so is running at 700MHz with 4-4-4-12 2T timings.

When I try for 3GHz @ 8x multi with 375 fsb or 333 fsb @ 9x multi I can't seem to get it Orthos stable with small FFT test, even with 1.45 vcore whether the RAM is at 5-5-5-15 2T or unlinked from the FSB.

Any recommendations? I'm seeing people achieve 3GHz with the same setup as me but with only 1.375 vcore.

I have 3 80mm case fans and my CPU fan is a Thermaltake Big Typhoon 120 with AS5 applied.

Thanks!
7 answers Last reply
More about help e4300
  1. bump!
  2. Follow the guides here (vFSB/Vchipsets, Bios settings, HSF...)
    Set multi to 9x
    RAM 1:1 ratio 5-5-5-15
    increase the vcore until stable Orthos 6-12h

    Many new C2D chips will need a high vcore bump o get past 2.8GHz, some people are lucky and got first batches, and some rare pieces on new batches are better overclockers

    Good luck, but you need to bump the vcore and see wher it will get yu, than tune it
  3. Maybe im missing something... but doesnt 5400 ram run at 675Mhz?

    Most ramz cant oc that well, hell, for some reason im underclocking my 800Mhz and i gotta overvolt that too!

    Try upping ram voltage a notch or 2. If that doesnt work run a-sync, and drop ram speed.
  4. Try running a 9x multiplier and an FSB of 334. That combo tends to be the easiest to run on lower vcores. Unless you got a particularly bad CPU, you ought not need much over stock vcore. If you got a good CPU, you can run 9x334 at or below stock vcore.
    Good luck with the OC!
  5. My E4300 is a bad CPU: 9x333 @1.47 vcore
    9x334 already needs 1.48 vcore

    Good luck and let us know when you tried what all the memebers above adviced you to do, and remember, each CPU is different and most E4xx E6xx new batches have it hard reaching 3GHz

    Like PaxAll suggested, some frequencies can be more stable than others on some motherboards, even if the FSB hole begins ususally around 350MHz
  6. Yeah looks like I got a bad CPU. For 3GHZ (334 x 9) I need 1.475vcore for it to be Orthos stable.

    Think I'll stick to 2.8GHZ which I can achieve at stock vcore @ 350 x 8.
  7. Yep, that's it, sadely... my batch is a Q649
    It is really a matter of luck. That's why people should stop using advices for noobs as: Of that C2D you should get at least xxGHz at stock vcore... Most of us bought a C2D to overclcok following first tests on ES E4300 chips. Well, they were like intel liked it to be: ES
    In any case, a 73% overclock is really enormous, and in your case, at 2.8GHz, a 55% overclock is more than respectable. 3GHz at 1.47 vcore doesn't look a bad setting if your temperatures follow... But it depends on how long you want to keep your chip. It is a 10.9% increase in vcore, so still in the upper limits fixed by intel.

    By the way, I can't even reach 2.8GHz on stock vcore with mine :-)

    See my sig, I'll use it till it dies :-)
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