Legit Reviews grabbed 8 SLI/CrossFire PSUs, none less than 550W.  Drop by to find out who makes the cut.
“Our goal was to take a sample of the SLI and Crossfire approved power supplies and put them through some torture testing to make sure they perform up to our standards. Armed with a pair of GeForce 7800GTX 512mb video cards in SLI on AMD’s new AM2 platform with a 5000+ processor and two X1900XT’s in Crossfire on an Intel’s 975 Bad Axe motherboard with a 965 Extreme Edition our core testing platforms are what enthusiasts are running. To top off our base systems we added watercooling, numerous casefans, a DVD-Rom and even Ageia’s PhysX processor card. We put together everything we could think of that would simulate a high-end system with SLI and Crossfire then ran it balls to the wall to see what happens. What did happen was shocking, but expected. Three of the eight power supplies are worth avoiding and we tell you which ones and why.”

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