Hi everyone, I need a little help on my overclocking.
I'm having major issues getting my CPU stable at clockspeeds higher than 3 GHz;I'd like to get some advice on what to do next.
I use Prime95 for testing stability (if Vista 32bit even starts )
I get like instant errors on starting a test (when doing the small FTT test, standard test lasts longer). Usually Core4 fails first.
First off, my specs:
Q6600 G0 @ 3,6 ghz (FSB 1600 mhz, x9)
Asus striker II NSE motherboard
OCZ 12800 1600 mhz RAM (2 gb x2)
3x 8800 Ultra SLI superclocked @ 675 mhz
Tagan 1300W PSU
everything is watercooled, GPU's, CPU, north & southbride, MOSFETS and my harddisk (All koolance stuff if someone wants to know)
I tried at first leaving everything at auto, with no success.
Then, I started raising voltages stepwise using a friends reference voltages as a start (same rig, stable 3.6 ghz overclock).
I went to the following max voltages, and there is where I gave up:
Vcore is @ 1.59375 V
CPU PLL 1.62 V
NB 1.66 V
SB 1.6 V
memory 1.92 V
These are BTW the Bios settings, CPU-Z & everest read usually a little lower values.
I disabled Spread spectrum, speedstep, C1E, CPU thermal management. etc.
Core temps on the CPU are now getting very high (75 under load). Sometimes the whole system just freezes and I need to reboot (I even had freezes in the bios).
So my question is, what should I try next, or is this CPU just a bad overclocker and should I give up. Or is some other voltage causing the lockups?
Ow yeah, today I upgraded my bios from 0702 to 0805, maybe that helps.
BTW, I have no clue what the CPU PLL voltage is, who has an idea whats it for?
Any help would be greatly appreciated!