I want to pick up some other Radeons as satellites, so I can power more monitors, I have a X1800XT, I need another 2 DVI PCIE card, and one Dual DVI PCI card. I want to stay within the family IE, use an x1600 pro, and a x1300 pro, but I am wondering, can I use a 3750, etc? How compatible are the radeons, with which generations could I mix and match? Thanks!