Are you able to keep both cards (that is, the apple and pc GPU) in your system with no problems? I want to move the 2600 to the second slot, and place a ATi 3870 X2 in the first slot. With this setup, I would like to simply change the display connector when changing OS's. Yet, I've heard of people saying that the card not being used has its fans go full blast, as well as other problems. Anyone able to achieve my desired setup without a problem? I probably will not do it if I need to open the case and remove a card for each boot into a different OS. Thanks.