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i7950 with H70 overclocking

post #1 of 5
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Currently at 4.0Ghz, temps seem to be fine and never go over 60 so far on load. The case is well cooled and has alot of air flow. Should I push more? would there be a performance increase that I will actually be able to see? or shall I just wait it out at 4.0ghz without any hassle ?
post #2 of 5
i think 4.2ghz is pretty much what will give you max results, those temps are fine.
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post #3 of 5
You probably won't see much real world difference but you would see some difference in benches,folding etc.
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post #4 of 5
Hey nice work on the OC to 4.0. That's a solid bump, and there is lots of headroom if you're loading up that CPU and not even drawing 60C. I can't tell at all what your version of "loading up" is- but if it's at all what someone would need to do to get a stable overclock then nice work. If you put it on prime for 10 minutes and called it a day... you have some work to do.

Like the gentleman above me says you do have some room to go- and with a 950 I think that 4.2 would be the 920s 4.0. After that you can still push to 4.3, 4.4... but your performance increase compared to the lack of efficiency (much more voltage required for gains) is going to suffer. Also, more subtle adjustments will need to be made in your bios. You're not going to bump up vcore, bclock, QPI / VTT and max your multiplier and call it a day. You're going to be running at higher bclock, which may require an adjustment in amplitude. You're going to need to consider load line calibration and perhaps even so much as to understand what it actually does for you over the longer term. You're going to need to disable spread spectrum and potentially adjust clock skew (depending on how high you go with bclock... >200)

And then it's going to be voltage, voltage and more voltage. Might have to dork with PLL, might have to bump up IOH, ICH... you'll definitely need to take any auto setting with QPI data link and your uncore...

Of course all your power saving and speed stepping settings will be turned off already-

As usual, it really comes down to what you're overclocking for. Do you want something to brag about on your signature or are you experimenting out of curiosity, or are you planning on being competitive with gaming or perhaps folding for charity?

So the bottom line is you can go higher- but when you give it a shot and start finding instability an easier destination than you expected... don't be afraid to set your clocks back before you get frustrated and throw in the towel. Stay curious, and don't let yourself get impatient and cut corners. Read the forums, use google and most of all don't be afraid to "reset to defaults."

Make sure your BIOS is the most current as well. Even though they say "updates compatability for new CPUs" what they don't say is it also increases stability for older ones.

Good luck and keep us posted!
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post #5 of 5
I pushed up to 4.2 because I felt bad running at 4.0 with underclocked RAM (which reminds me I need to work on my timings).

Didn't take too much to get to 4.2 and I think it was worth it (another 7% on the overclock after all)


I did find that beyond 4GHz though my CPU started to get quite voltage hungry from 4.0 @ 1.25v to 4.6 @ 1.4v just to boot.

In hindsight I could probably spend a bit longer tweaking the setting to increase stability at the higher clocks but you get the idea, it's harder from here on in...
    
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