Well, Apple is sending me a replacement for my 2008 iMac with Nvidia 8800GS. Don't ask why lol, the story is too long to post here. I chose to pay $50 extra for the new(er) Radeon HD 4850. Has anyone played CoD4 or CoD2 on Snow Leopard with the HD 4850? I know CoD2 had some driver issues with my Nvidia 8800GS (I would only get ~40 FPS at low settings), so I'm hoping that will be resolved with this new GPU. As for CoD4, this should slay it, unless I encounter some of those purported memory leaks... I'll be getting the new iMac in a week, so I'll post the GPU performance on those two games once I install them. Of course, if anyone HAS played them, please comment, as I don't want to get my hopes up TOO high.