Recently, while working on complex scenes in maya, mac pro hangs and I have to restart it. It`s an old first generation mac pro with a terrible nVidia 7300 GT graphic card. I guess I have to change the graphic card. The problem is that I live in Iran and if I order something from apple it`s going to cost me a lot and I`ll get it next month (if lucky). So I was thinking of buying GeForce 8800 GT from market. I know it`s an old question but is it going to work on my mac pro? I called apple about this. They said it may or may not work.