I'm running an Antec Quattro Pro 1000w. 5450's @ 3.5 (fb-dimm limited until I get my 800mhz ones in), 4 hdd's, 2 optical, 4 120mm fans, X1950XTX 666/999 1.525v or XFX 8800GTS/512 800/2000/1000 1.3v

PSU has been tested to 1100W