eva2000
Gawd
- Joined
- Apr 14, 2002
- Messages
- 539
ah similar results to my i7 920 3836A756,In the last month, I purchased three Intel i7 920 CPU's with the intention of keeping the one that OC'ed the best. My initial X58 motherboard was the Gigabyte EX58 Extreme and I had so many problems with those boards that I couldn't individually test each CPU. I RMA'ed both of the Gigabyte boards back and got an open box ASUS P6T Deluxe, which has been so much better. So without a wonky mobo to worry about, I was able to start sorting out the CPU's and the results were fairly interesting (full system specs are in my signature).
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i7 920 #1 (Purchased from Mwave on the week of its launch for $310 plus tax. Batch #3836A866 and pack date of 11/06/08.):
24/7 Prime95 Stable OC: 3.8GHz (20x190) @ 1.2875v. (CoreTemps) Idle temps = 36 - 40*c, Prime95 small FFT load temps = 70 - 76*c.
Highest OC tested: 4.0GHz @ >1.4250v. Idle temps = 45 - 50*c, load temps = 86 - 90*C AND NOT PRIME95 STABLE
Summary: this CPU was the earliest pack date and got to 3.6GHz with no effort. 3.8GHz was the sweet spot because BIOS vCore was relatively low at 1.2875v and idle temps were decent. At all speeds, load temps were always higher than I like to see but at 4.0GHz getting near and sometimes over 90* was very disturbing for me. The increase in voltage it needed to get from 3.8GHz to 4.0GHz was substantial (over 0.15v) with ridiculously hot temps and was definitely not worth it for me. And even then, it still wasn't Prime stable. I wasn't going to give it more voltage when temps were into the 90's as is!
On TRUE120 AIR cooling
- 3.8ghz 1.232v prime95
- 4,0ghz 1.328v prime95
- 4473Mhz max 3d benchable
- 4610Mhz max super pi 32m stable