The min power requirements for gtx 280 is 550 watts with an 8 pin pci-e power and 40 amps on the +12v rail.
So if you buy one make sure your power supply meet the min req.
so each 12v rail must be 20A because its uses 2
So if you buy one make sure your power supply meet the min req.
so each 12v rail must be 20A because its uses 2