Hey Gang - I had read the great detailed in 2006 about using different video cards in your mac pro. Here is the $Million$ question??? Can you buy another faster PC-express video card and drop it into another slot as long as you leave the stock video card in. My Dell 19" has 2 monitor inputs and could have 1 cord going from each video card - depending if I want to play games on Boot Camp or just boot up in OS X??? Any answers??????