I only have a 250W PSU, but I have a Radeon 9800 Pro 128 MB, a P4 @ 2ghz, 768 MB RDRAM, Windows XP . Do you think that I need a stronger power supply? Because my Radeon 9800 Pro performed much worse than three slower cards (two GeForce Ti 600 and 800 I think and a Radeon 9700 Pro) in the 3DSMArk01 test and these people had the same system specs as mine but different video cards. So maybe my PSU sucks