my current rig consists of msi z68-gd65 email@example.com gtx470 adding a second for sli, hence needing new psu, second 470 puts me over on power. 3x 74gig raptors 3x samsung sata drives 2x swftech 655 pumps 8x yate loon medium 120mm all that puts me at about 750watts, my psu is a pcpower&cooling 750watt silencer. max output is 825watts according to the manufacturer. so i need a new psu. look down 2 posts for new info and budget. found more money hiding in the corners of my wallet.