"Overall, the OCZ ProXStream is a recommended power supply. It is multi-gpu ready with a four 6-pin PCI-E power connectors. It's server class internal components and build quality is also welcomed. Unfortunately, it does not come with the new 6 + 2 Pin PCI-Express connector, which means that it is not prepared, if your graphics card requires a 6 + 2 Pin connector."
The tests were performed on an Opteron build with a pair of 8800GTS cards.