how well will this cpu AMD Phenom X4 9550 work with mw2 (i mean will it perform without lag)...6gb ram
windows 7 ultimate x32 bit
psu:dunno the brand 1600w...
graphic card: still to decide (ati hd sapphire 5970 96%)
internet connection....37mb download 0.25 up
A normal wall socket doesn't even provide 1600W
it's only able to do about 1200W. That processor is going to bottleneck the 5970 in that game(in many games it will), but you shouldn't be laggy in that game.