Hi guys. Got a small problem here that sum of yous might b able to shed sum light on. Im doing an old school retro build. Here are the system specs: P4 Extreme Edition 3.4ghz Abit IC7-G MAX3 2x1 Gigs Corsair ddr His x1950 pro Casecom 650w Veloci Raptor 300g Corsair 650D Ok, so i havent completly finished the build yet coz im waitn on sum water cooling parts. Anyway i went about doing a little overclocking on this beast (with the stock intel HSF) and had no joy at all. I put everything stock and was increasing the vcore only and checking temps. So what happens is i can get 1.65v to boot into widows but 1.675 and higher wont. Basically what im asking is what is failing on me? Is it heat or the shitty power supply ive got. I was doing a little testing and the 12v rail was dropping to 11.55 under load. Again no FSB OC only upping the volts. This is very strange!