Should the new iMacs have any problems with games? How good is the card in there. Mine is the 24" 2.4 so the card with 256 vram. On the civilization box it recommends only 128 vram, but a 9600 or better ati radeon. How does this compare to the iMacs card. Obviously the iMacs vram can handle it. But for some reason when I play civilization it gets black streaks across it sometimes for small moments it definitely looks like it could be something with the video card. Would calibrating the screen help, that was a suggestion from someone, but I have absolutley no clue what that means or how to do it to fix my situation. THanks for any replies.