Sorry to threadjack but since sombebody asked, no I didn't have 2 GPUs but this is what I was running with the 600W Powmax Demon
Nforce2 Shuttle mobo with Athlan 2600 mobile clocked at 2.8ghz
Nvidia 6600 clocked at 500/700
14 fans ranging from 80mm-120mm
3 hard drives
2 DVDRW drives
Wireless card
Firewire Card
now the clockspeeds are back to stock on everything
Nade is right about NewEgg reviews though, the new fun thing to do for people is to write bogus NewEgg reviews, most of them tend to be ridiculous and obvious though. If you can afford a better PSU then it would be wise to get it, but a cheap one won't absolutely blow up your pc and turn it into a smoldering pile of goo like people were trying to tell me, as long as the wattage and amperage can handle what you throw out.