Ok, I have an E6750, Asus P5N32-E SLI Plus, and 2 GB Patriot DDR2-1066. At the moment I have a stable overclock on the processor at 3.1 GHz. My RAM is at 950 MHz, considering that the system will not even POST when I crank it to 1066 (yes, I have put the voltage at the spec'd 2.3 V, loosened all the latencies, etc). My voltages are fairly high right now; 1.5 V CPU, 1.85 V Mem (surprisingly enough, it runs more stable at 1.85 V than at 2.3 V, read: it won't make it to the login screen at 2.3 V), 1.4 V NB, 1.2 V HT (multiplier has HT running lower than stock, so no problem here), and 1.6 V SB. Now that I have all the obligatory information down, I can get to my question. I know that my CPU can go faster than this, and I am pretty sure my motherboard is somewhat known for being a pretty good overclocker. Yet, regardless, when I raise the clock to 3.2 GHz, KAPOW! no POST. It seems odd to me that 100 MHz would take me from a totally stable overclock to one that keeps the system from posting altogether. Do any of you have any suggestions for what to do to squeeze more out?
How have you got it at the 3.1GHz? What have you got your FSB and multipliers set at? Have you got a super tight timings set on that ram? (since you can't get the speed you want out of it.) You have got a good overclocker for a motherboard there, definately should be able to hit higher than you are. I've seen em hit 3.5, but that's with expensive aftermarket HSF.
Well, multiplier is stock, it is only unlocked down. That puts the FSB at 1550 MHz. The timings on the RAM are as advertised, but the RAM is running over 100 MHz lower than advertised. Also, I have loosened the timings all the way and it doesn't change anything. Also, I might not have the best, but I have an Arctic Cooling Freezer 7, which has me running at 43 C. I really don't think temp is the issue here as I would be seeing instability at 3.2, not a complete failure to POST.
