I have bought several ATI cards over the years, and not once could I get the drivers that came with the card to install. I always had to download newer ones and install parts of those, reboot, then try to install the ones that came with it and get a little more to install, reboot, then try the new ones again, and they would bitch that I needed to install Y to be able to install X, but when I tried to install Y it required X, until I manually installed the card as a generic VGA card and then manually installed drivers for a much older card and then started over with alternating between different versions, etc. etc. etc.
My once many-hundreds-of-dollars top-of-the-line 850 XT PE AGP is still suiting me just fine (perhaps the fasted AGP card ever), but I haven't dared try to upgrade the drivers since I bought it years ago. But I might have to, CLI.exe or something crashes at bootup now.
Every nvidia card I've owned installed flawlessly the first time, without 3-30 reboots that ATIs require.