Quote Originally Posted by Sampsa
Well, I'm only using the monster 1320W PSU for DI/LN2 overclocking. For regular testing I have here Tagan 480W, Silverstone 560W (one 12V rail), Silverstone 600W (four 12V rails), Antec 550W and few others. In my tests Silverstone 600W didn't handle FX-60 + Radeon X1900 CrossFire @ stock speeds.. I had to change to Silverstone 560W which has only one 12V rail.

I noticed that @ default clocks ATI Radeon X1900 XTX draws 24,5 A according to ATITool.
SO this OCZ 600w PSU can't run my system? It only has 20A on but 12v rails so thats to low I guess, cuz running just one X1900 XTX work perfect, only when I enable crossfire I get major problems. Thanks for all the help everyone, I learned alot now. So now I should shop for a PSU with 600W or higher with one big 12v rail with 50A?