Sounds like you got all your ducks in a row and it paid off! I originally played CoD with a GTX285 vid card which worked fine with most settings set to Medium and turning off grass, etc. When I cranked the settings up unfortunately the frame rates got too slow to play, but it gave me a look at how outstanding the graphics can be. The two GTX 560 Ti cards made a huge difference with settings turned up, but I still have to toggle off the mirrors on th Spit and Hurri to keep the frame rates between 50 - 60 over land.
Congrats on your set up.
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