Had the issue recently with my gf's MBP. Screen wouldn't flash at all, no chime, etc. Logic board went out, and boy was she glad that it was covered in the extended warranty. I guess yours isn't, eh?
I had a slotket on my ABIT BE6-II, the slotket was made by ASUS. It had a bunch of jumpers on it to adjust voltage, and *maybe* the multi and FSB, but that I can't remember.
So yes, in theory it should work.
LinX for any Intel systems please, it stresses WAY more than P95, even better than OCCT Linpack.
Also, use the highest temperature between the two sensors.
The lower temps the better with higher overclocks. Had a friend toast his 920 C0 after a while, CPU was under water, rendering stuff would get the chip in the high 70s, that was at 4GHz. He rendered for many nights long. The chip took a fair amount of abuse before that tho, in the end he had to...