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i7 970 overclock? - Page 2

post #11 of 50
Thread Starter 
Thanks for the help guys. So I hear prime95 is a good test for cpu stability. Should I use small ftt, large ftt, or blend? Also what kind of temperature range should I panic at?
post #12 of 50
small fft's

I would try to stay under 80 for sure
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post #13 of 50
with a i7 970 i would aay anything under 85c is fine. you need to realize that prime95 will push the cpu much farther then any game or application can.
post #14 of 50
We have seen the comment "my overclock was 24hrs prime95 stable but it crashed while trying to fold" time and time again. Folding is a great stress test. We would welcome you joining our OCN folding team (team 37726). Remember, with folding you have to finish what you start. Downloading work units just to test your overclock is in poor taste.

EDIT: Like I may have mentioned I run an 17-970 on water at 4.05Ghz and the folding points just roll in. If you can't afford the "latest and greatest" the i7-970 is not a bad second choice at all. I paid 400.00 for mine about 20 months ago, you can conclude the price is probably down to 325.00 by now. This is still not cheap, I realize, but you do get a great cpu. Why are you keeping the type of motherboard you are using a secret? I use the ASUS P6X58D-Preminum but would like to give the Gigabyte OC board a "test drive"
Edited by PCCstudent - 6/7/13 at 6:57am
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post #15 of 50
i7 970 is based on the Gulftown core whereas the 920, 930, etc. are based on Bloomfield. Bloomfield had an early revision, C0, that didn't overclock as well on air in many cases. When D0 was released, the overclocks used less voltage and ran cooler, generally leading to higher overclocks.

On Gulftown (like your 970), you'll see A0 and B0 engineering samples. All retail chips are B1 stepping. Most Gulftown chips should do 4.4-4.5GHz for 24/7 with safe voltages (under 1.40V) with a bit of tweaking.

Once you fill our your system specs (use the Rigbuilder link at the very top of the page), we should be able to give you more specific help.
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post #16 of 50
Thread Starter 
I tried filling out the rigbuilder but it's not cooperating with me so well. Also unfortunately I cant find the exact info on my case since this computer was a gift to me. I can tell you the the power supply is 1k watt though. Below is the info rigbuilder wouldn't let me throw up.

post #17 of 50
Even at 1.29V I still run 58-60C and I am in a refrigerated air room. Be prepared for some heat to deal with at 1.4V. I do know there are differences in the 920,930,970 but they are performing so very close when it comes to voltage and heat output at the working 4.05 overclock I use for all 3.
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post #18 of 50
the 970, 980 and 980X are 6-core CPUs (I had a 980X) which do not OC quite the same as the Bloomfield (i7 920, 930, 940, 950, 960 and 965 Extreme) simply because you are pushing 6 cores vs only 4. But from my experience OCing Gulftowns, they OC fairly well. I had my 980x at 4.0GHz with 1.283v. I then did a build for a friend with a 970 and it did 4.0GHz with 1.20v. And from I've heard from other 970 owners, they saw similar results:

970 15Hrs prime Stable:



Here are my stable settings when I ran my 980X with 24Gb ram (all 6 dims) in an ASUS Rampage III extreme to give you an idea of what could work (try different vcore though). Notice the QPI/DRAM core voltage... that's for all dims being utilized. If you are just running 3 modules, you should only need 1.22v max with your typical DDR3 1600 ram. Also note the QPI/Dram core voltage depends on your CPU's integrated memory controller:



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post #19 of 50
ericrod, have you any tales of Gulftowns at 4.5? I do notice that even small drops in Vcore helps tremendously with temps.I bought mine from Desert Rat and he never tried to convince me that he got it to 4.5Ghz.I could try working more with mine but it is doing its job well (meaning I am not "EUEing any work units) so on to other jobs.
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post #20 of 50
My 970 was 100% stable at 4.6GHz with 1.375V. My 980X would do 4.75 with 1.40V... It all depends on the chip itself.
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