To date I have converted an ATI Rage Pro, a Radeon 7500, a GeForce 2 MX and a GeForce 4 MX, but I have yet to convert a Radeon 9000 Pro. All of them have worked, except to say that both Nvidia cards did not display an image until they almost reached the desktop on their first boot, but subsequent boots already display an image from the beginning. These two graphics cards, under OSX although they boot by default with the compatible resolution, offer all resolutions, even if they are not compatible. Under OS9 they offer the compatible resolution and 1920 x 1080. The ATI cards offer all the resolutions supported by the monitor on both systems.