Hi,
I have some problems.. I saw that a guy could Mix a ATI card With a NV card, but when i try my computer will restart when it should start. I have a ACE RAW 520W(Cheap and crappy) and i want to use a HD3870 and a 8500GT (for physx

) But is it the PSU that are to weak, or is it driver problems.. I use WinXP 64-Bit, and XP "should support" two different cards..
I really hope that the PSU is to weak so i can buy a new one, not only for this, but for the future to.. ^^
I'll appreciate if anyone can help me.. ^^
Is it something i need to change in Windows

But i really hope that the PSU is the Main problem.. ;D