TigerDirect is having a 50% off sale on the Ultra X-Finity 600W PSU's....
http://www.tigerdirect.com/applications/searchtools/item-details.asp?EdpNo=1273340&Tab=0&NoMapp=0
This PSU is SLI ready and is on NVIDIA's QVL list.
http://www.tigerdirect.com/applications/searchtools/item-details.asp?EdpNo=1273340&Tab=0&NoMapp=0
This PSU is SLI ready and is on NVIDIA's QVL list.