Retail Q9650 Overclocking Thread

[kill_a_wat]

kill_a_watt

I tested and my chip needs more vcore to achieve 4230(470x9) stable, or maybe more VTT i don't know...

This is what i am testing now

4203 (467x9) MEMS 1245 PL7 Stronger

Looks like your IBT runs are good for 4.2Ghz.

Have you run Prime95 small FFT for 470x9? I'm pretty sure you'll get core failure if using those 4.2Ghz settings but just run it and tweak from there.

Normally my order of tweak in small fft is the lowest CPU-related volt then lastly the vCore - it really depends what your individual chip needs

Another thing you may want to try is:

CPU vCore - 1.42
CPU PLL - 1.61
CPU VTT - 1.42
GTL refs - core 0 - auto, core 1 - +70mV, core 2 - auto, core 3 - +70mV

Note: the above settings allowed me to small fft on 495x9... so they should be ample for you. I think 4.25-4.3 should need (at most) 1.4vCore and 1.4-1.42 CPU VTT

*with the GTL refs you may want to use the formula VTT x GTL ref then try different GTL combos that yield the same result eg .67 GTL that yields the same value as your current setup then try +/- 1 or 2 notches. Although from my experience I did not have much luck with this but I didn't try it for very long. Also i'm assuming you have been keeping a log? If not it would be a good idea