The Tech Report has an article about a different use for ATI’s x1000 series GPUs.   Not only can they provide incredible graphical performance, but they are also much quicker at processing phsyics than your main CPU.   Read the full article if you want to know how texture memory can be used for general storage, and what pixel shaders can really do.
“One of the more surprising aspects of ATI’s Radeon X1000 series launch is something we didn’t get a chance to talk about in our initial review of the graphics cards: ATI’s eagerness to talk about using its GPUs for non-graphics applications.”

Here are some more Graphics Card articles from around the web:

Click Here to go to Video Cards   Graphics Cards