OCZ GameXStream 850w SLI-Ready PSU
 

"It's no secret that today's hardware is demanding more power than ever before. For instance, those interested in running two 8800GTX cards in SLI are looking at a bare minimum of 750 watts in the power supply department. Factor in your processor(s) demands, hard drive(s) and watercooling gear and that 750 watt minimum seems a little less inviting. Granted, many of us are not fortunate enough to have the budget to support such extreme hardware addictions, there is one thing that we all should consider when purchasing a new power supply: future-proof."

http://www.ocia.net/reviews/ocz850/page1.shtml