I have a G5 2.0 dual with PCI slots. I currently have a 256 Radeon 9800 Pro Mac edition in the AGP. That is connected to my 20 Apple LCD. At present I have a 15 inch Studio Display connected to a radeon 8500 Mac PCI card. What can I upgrade the 8500 with? What is a higher performance card that still works in PCI and works with a G5 mac? I am not looking for gaming performance, but enough to drive another 20 inch LCD with no worries. The 8500 does not like my other 20 inch LCD.