I have a Corsair HX750 that I've been using without problems for almost two years now. Today the 12V rail on my power supply just randomly spiked to 20V, returned to normal, dropped to 0V, returned to normal, and has stayed at normal for a while now. (http://imgur.com/OveiLom) This morning I used the Asus overclock utility to oc my cpu from 3.4GHz @ 0.9V to 4.2GHz @ 1.15V. I did the same overclock the same way before almost two years ago when I built my computer and had it at that speed up until last month when I updated the BIOS, which resets the overclock parameters. I can't find any information about this anywhere else and this is making me very nervous. Specs CPU: Intel i5 3570k @ 4.2GHz @ 1.15V CPU cooler: CM Hyper 212 EVO Mobo: Asus P8Z77-V PRO RAM: Corsair Vengance 8Gb 1600MHz GPU: 2 Sapphire 7950s in crossfire SSD: Samsung 830 EVO 128GB, Samsung 840 EVO 250GB HDD: WD Caviar Black 2TB, WD Caviar Blue 1TB
PSU: Corsair HX750 750WRK