Quote Originally Posted by Dee View Post
I don't know, but isn't anything above 1.6v PLL a bit unsafe?

I really wish we had a chart for this stuff.
nope. 1.5v is the base vCPU_PLL. It needs to be independant of other voltages and thus higher than the rest. 1.8v for the CPU PLL voltage would probably be the maximum you'd need to go when using 1.5-1.6v vCC. I notice for the current C2D chips the differential is 0.2-0.4v between vCC and vCPU_PLL. Stay within that window from vCC and you won't damage anything long term.