Originally Posted by Joa3d43
...your PLL, VCCSA and VTT are all within 'normal' C2 stepping ranges I take it..there always is the 'reverse method' also...pick a max v-core and temps you can live with 24/7 (incl. folding) , then find the associated CPU speed...anyhow, a quick (but somewhat brutal) method to 'find the range' of a CPU I use sometimes is:
a.) limit VCCSA and VTT to no more than 1.85 (less is better, 1.20 is max for C2); PLL no more than 1.85/1.9 - the higher that one, the higher the temps
b.) run Cinebench 11.5 to either
find the v-core for the desired CPU speed, or
the CPU speed associated with the desired max v-vore / temp
c.) I use Intel's XTU to then test CPU and also memory stability - is just a touch more demanding (watt and temp wise) than Prime95 and thus a bit quicker to find weaknesses
...hope this helps - you may already know all that anyways so hopefully it wasn't 'coals to Newcastle' but a CPU that doesn't want to cooperate is annoying
Yeah, I even tried putting them up to 1.2v just to try to eliminate that, but it didn't seem to make a difference, so I set them back to the default values since I have the RAM underclocked. PLL was going up to 1.88v on auto, I tried lowering it to various levels, and that had no affect on stability, maybe lower temps slightly.
That's pretty much where I'm at now, I picked the highest vcore I was comfortable with for my cooling, 1.37v puts it right around 70-72C in prime95 slightly less while folding. I'm at 4.4ghz now, and it seems stable, ran an hour custom blend on 1344 in p95, and have been folding on it since.
I think I just have a terrible chip, which isn't the end of the world, as it's really just a stop gap for IB-E.
One thing I will say, is that after hours of overclocking, and non-descript smiley face BSOD I sure do miss W7.
Edited by anubis1127 - 6/5/13 at 7:53pm