Quote Originally Posted by jmmtn4aj View Post
Heh, I lowered the PLL voltage back to 1.55 and it crashed within minutes, just as I was typing a reply here in fact.. So I've jacked it back up to 1.75v.. Is the PLL chip the one on the motherboard that SetFSB asks you to identify, or a chip on the processor?
The Phase Lock Loop circuitry is part of the processor. The digital and analog supply voltages for the circuit are supplied from the board.

Quote Originally Posted by jmmtn4aj View Post
And one more thing, would lowering the PLL and jacking up the vcore produce the same result? Can either compensate for another? I'd try but I don't have water cooling and it's already touching 70deg on the warmest core folding..
Normally increasing the PLL voltage only helps with the CPU FSB wall. Who knows why. Possibly an apparent reduction in jitter by increasing the voltage? But anyway what you will usually see is once PLL needs to be increased the processor has pretty much reached the end of the road as to much more of an increase of FSB can be tolerated.