Should work, although I personally would limit Corsair to my memory choice and chose something like Enermax, Seasonic or PCP&C for a high end powersupply.
Manny, the Corsair power supply is fine since it is made by Seasonic, but I would deep six the Corsair XMS2 6400 memory with those crappy PROMOS memory chips and go for something cheaper and better.
I was just wondering if this was ok. I have the same power supply and I want to go SLI as well with my 8800GTX. I know it supplies 50A total on the two 12v rails. I thought the 8800GTX needed 30A a card?
this guy ran his hx620 with dual 8800 for a couple weeks with no issues
"Last week I purchased my own Corsair 620HX based on what the rep shared with me. The system I planned to run had substantial requirements, QX6700 overclocked and watercooled to 3.5GHz, and 8800 GTX SLI. A single Raptor X drive, an external USB DVD drive, a modified DDCT-01 water pump from Petras Tech Shop, and 2x 120mm fans round out the rest of my power consuming hardware."