Thermaltake Toughpower Power Express 650W VGA Power Supply Review
 

Thermaltake has an answer for that problem, a 650 watt auxiliary power supply that fits in two 5 1/4" bays. Use it in combination with your 600 watt PSU, and you now are pushing 1200 watts, enough for pretty much all VGA configurations. Though not a unique idea, the Power Express 650 is modular rather than having a huge wad of unsightly wires to ruin your clean build. You just connect the power cables you need. And it costs about a third of that 1200 watt PSU. Does the Power Express have what it takes? Read on to see!

http://www.thinkcomputers.org/index....reviews&id=832