Power supply recomendations.

You can, but they are not in SLI (connected). You will have to run a client for each CPU, and each GPU.

The SuperFlower GoldenGreen series rocks! The Kingwin Lazer Golds are Golden Green based units.

Mind you, I'm a fan of the current SilverStone units. Most computers I build for others have Silverstoen Striders in them