PC Power and Cooling S75CF Silencer 750W Quad Power Supply Ati Crossfire and 80+ Certified (Red) 750W Continuous @ 40C (825W Peak) Up to 90% (10dB) Less Noise per Watt NVIDIA SLI Certified (Dual 8800 GTX) ATI CrossFire Certified (Dual 3870 X2) Technical Support Toll Free (800) 459-1816 or fill out a trouble ticket, here is the link http://www.ocztechnology.com/NewTicket.html