Originally posted by J3Vr6
Will a ATI radeon 9x00 work with a 1.5 ghz amd computer? I want to upgrade soon and I heard that really fast cards won't work on slow computers or something like that. Is a 1.5 considered slow?
Whoever told you that is definately off their rocker. I could put my relatively new Radeon 9700Pro in my old Pentium III board with no problems. There are a couple of things to be aware of but nothing that carte blanche says that you can't use a newer card in an older machine.
Here's a couple things to keep in mind:
1) AGP port...almost all new cards are AGP 4X/8X (and sometimes support 2X) compatible. Most of this has to do with the amount of voltage your board supplies to the AGP port. The best of the old boards have more than enough, some of the cheaper ones may not work.
2) A top end card, provided that number 1 is fufilled, will work just fine and dandy in your system. But in games where you have

of CPU processing required don't expect a massive jump in speed. Image quality should go up, but FPS will probably stay virtually the same. Both CPU and VPU/GPU are important to the experience.
So you can upgrade your 1.5 Athlon with probably few problems. Yes its kind of considered slow these days (the current Athlons are clocked at 2.2 but are generally as powerful as 2.8 through 3.2ghz) but provided you have a good motherboard you shouldn't have any issues. Just remember that some games will not benefit from the video card upgrade as much as others (depeneds on their skew to CPU or graphics processing).