This may be a noob question or a semi-noob question but I was wondering if it would be possible to run two entirely separate video cards. For example, Apple doesn't have a huge selection of video cards that are available and the ones that are available aren't quite up to par with the windows compatible ones for gaming. So I was wondering if you were to buy a MacPro, that is intel based allowing you to run windows, if it would be possible to have the Apple compatible Video Card running when you are in OSX and the windows compatible gaming card running when you are in Windows gaming. If this is possible it could be quite interesting. Any help is appreciated.