Hi im totally knew to this overclock stuff (and forum) but i had my i5 2500k stable at 4.4ghz with 1.345 vcore but then i got a BSOD playing gw2 when i had it stable on IBT maximum. I kept notching the vcore up bit by bit and the only stable vcore i can now get at 4.4 is 1.375? so my question is why would my cpu suddenly want more volts? thanks.