Just a follow-up from previous posts/issues I had.
I located a non-authorized update (177) for my nVidia driver and installed it. That seems to have made the difference as Prime95 now runs perfectly.
My current OC settings:
3.627G (x9 multiplyer), Memory at 1:1 (timings: 3-3-3-12), Vcore at 1.43v.
Thank you everyone for any help you have been able to provide me.
I do have one question, though. I have noticed cores 3 & 4 are 2' cooler than cores 1 & 2. Why is that? I use liquid cooling, and reset my block thinking it was off-center. Didn't make any difference. (No, I didn't lap the CPU - would that be the reason?).
Yeah that's what i thought too, but i reseated my Heatsink, (Tuniq Tower), a while back and no change. I would probably have my Q6600 at 3.6ghz if it wasn't for the two hotter cores.
It runs about 60,60,52,52 at about 75% load, from F@H SMP. This is at 3.2ghz x8 multi and 1.30v @ 75% load. 100% load i think it's at about 1.29. And 1.33v Idle. Makes me wonder if half my chip is B0 stepping and the other half G0, lol.
Each core has a sensor which are notorious for having accuracy issues. According to Intel they are really just for overheat protection vs temp monitoring. They do work better at higher temps and they are very good about shutting down a core when it hits tjunction at around 100C.