With the new mac pro out, I've become confused about which cards are compatible, or can be made compatible, with the older Mac Pro. I was wondering if there is a better card (other than the Quattro FX) for the older Mac Pro model (which I hear can't run the PCI Express 2.0 cards.) Thanks! P.S. - Is it possible to plug in, say 2 GeForce 8800 Ultras in SLI, as an extreme example, an run them in the Windows XP partition? Then you could switch it back to something like the original 7300 GT (assuming there isn't room for another large graphics card) to run Mac. I don't need much graphics power in Mac, and I am willing to switch the plug to change systems (I used to switch CPUs entirely without a KVM switch), and I was wondering how much power I could get.