I have the X1900XT in my Mac Pro 1,1, which I got when I first got the machine. I don't really game, and don't really need anything better, but I'm probably gonna be playing a few minutes of Call of Duty 4 here and there, and thought it would be nice to have a video card that can handle it the way the X1900XT handles Call of Duty 2. I don't want to flash anything.. I would just want whatever the fastest official Mac card for my machine is. Can someone explain to me how it all played out in the last five years? I kind of didn't keep up to date. Thanks!