Radolfi
I looked through the thread on grapics card device info at the top of this forum section. If you look through all of the cards listed there are really only a couple of technology bases that support the latest shaders. The cards listed show version 1.1 for the highest version of vertex shader supported, and 1.4 for the highest version of pixel shader supported. At those levels, there are only a couple of well known technologies listed, the NVidea FX5700 and the Radeon 9600.
But this is just a listing of what people here are currently using. Higher level technologies may be available now, or just coming online. Personally, I'm just looking for a nice mid range card that will let me play with all of these wonderful new 3DGS toys, so this list is probably adequate for my needs.
I'm just checking here before I commit cash somewhere.