Originally Posted by collateral
my pcie is at 1.4v.. but what exactly doe it have todo w/ur cpu?
Nothing, specifically. But your system won't run stable unless EVERYTHING (sorry for the caps) is running with enough voltage.
That is why, when you overclock, you should take all the voltages off AUTO and set them yourself to exactly what you need.
When Orthos or OCCT stresses your computer, it's not just running the CPU - all the components in your system (i.e. RAM, northbridge, southbridge, PCI-E) are being utilized (at least somewhat), and they need a specific amount of power to run properly.
So if your voltages are too low for anything, your system could crash or "BSOD" at any time.
You're going to want to check the manual and some overclocking guides or get advice from someone you can trust when seeking the correct voltages for your specific motherboard. Because over volting anything can lead to fried components.
I see you have the same motherboard as I do. For some more information, this handy Overclocking guide by nVidia
for the 680i chipset may answer some questions. It did for me. Hope it helps.