My graphics card has failed, and since then it has been causing my computer to completely shut down. So I decided I will replace the ancient (stock) NVIDIA GeForce 7300 GT with the ATI Radeon 5770 http://m.ebay.com/itm/231466617634?_mwBanner=1 There are very few "supported" options for replacements, but both the GeForce 8800 GT and the ATI Radeon X1900 (the only other options that seem reasonable) got really clunky reviews for unanimous reasons. Today, I noticed that there are later models of the 5770 I chose to go with. They are the 5850, 5870, 6850, and 6870. Would an early model Mac Pro 1.1 like mine, with a processor and RAM upgrade (11-15gb) work with any of those "out of the box"? My processor upgrade was from stock to something better without changing the firmware or flashing the ROM or whatever, so I don't think that part matters. Thank you. Anyone interested in the dilemna that brought me here, just check out my previous post in the Mac Pro section.