Originally Posted by Blizzie
Nice one. What are your temps on that Megahalems (and what fan setup)?
I can't get 4.1 GHz no matter what I try.. Crashes after a few passes of LinX.
My temps are idle 42-45; load in LinX are 70-72, in Prime 95 are 60-64. My Megahalems is with a single Scythe S-Flex 1200 RPM fan.
I want to share a few observations from my i7 Lynnfield OCing experience so far. It is very important to find ultimate BCLK stability first, and that has much to do with a correct VTT voltage. But it all depends on the quality of the RAM memory your using, IMO. Some memory just seem to need high VTT voltages (beyond Intel specs) to run at advertised speeds. Mine are utter crap, I can't even get them to the advertised speeds (DDR3 1600 8-8-8-24-2T), so I have them at DDR3 1376 7-7-7-20-1T (172x8), because a BCLK of 172 is the maximum I can get stable with a low(-ish) VTT of 1.23. I'm afraid of pushing this voltage higher, as Intel says the absolute maximum for the Lynnfields is 1.21.
Once the BCLK stability is found, I just kept pushing the CPU multiplier with a vcore voltage I'm comfortable with (my "comfortable" level is 1.35 and below). My i7 875K is now with a vcore of 1.30 at 4.128 GHz. I guess I should be happy...or, should I squeeze more from this chip?Edited by Yoor - 6/20/10 at 11:08pm