I checked my BIOS yesterday randomly, my 2500k is overclocked to 4.0ghz using the ASRock OC tuner on the Pro-4 Z77 motherboard. The CPU PLL voltage was like 1.81 or 1.83, seems kind of high to me. These are all on 'auto'. Would it be worthwhile to switch CPU PLL to 'manual' and lower it a bit?
ps. Temps are great... i just thought the voltage seemed high.