I have a MacPro 1,1 with the original Nvidia Ge7300GT card. I would like to update it with a better graphics card. I saw the threads about the option of flashing a PC edition of the ATI 4870 card, and this seemed like a good option. But it seems to be important to get a specific type of ATI4870, and all the ones suggested in the various threads are now showing delisted / out of stock, and on 2nd hand market you can't be sure of the type of card so easily. So are there other cards I could use that will work with the 1,1? I'm not interested in state-of-the-art (nor do I have that kind of budget), but something that will improve the speed of graphics to allow photo / video to work better. Thanks in advance for any help.