How Big of a Power Supply Do you Need?

[Bleep]

I think that either one of these two PSU's should suit your needs;

ANTEC TRUECONTROL 550 WATT ATX12V POWER SUPPLY W/FRONT CONTROL PANEL

ENERMAX EG651P-VE FM 550 WATT ATX 12V POWER SUPPLY

Both are very good PSU's with lot's of juice!