Originally Posted by ryboto
The GPU client only has a console version. As for slowdowns, expect them. The client uses your GPU, the device displaying your desktop, and all the windows you have open. Firefox, IE, they use video memory to display things, and they'll be competing with the F@H client for bandwidth through the GPU. Videos might play while the GPU client is running, but they might be choppy. Also know that the GPU polls the cpu, so it might cause performance issues there if you're trying to do too many cpu intensive tasks.
There are two version of the GPU client now available at http://folding.stanford.edu/download.html
. I have used them both. I also have folding on different ATI cards, a 1950pro, and a 1950XT. The pro work quite well with no slowdowns and such, and outperformed the 1950XT. The issue with the 1950XT was that it allowed the client to switch between 3D and 2D mode, which can cause issues with folding. There are ways to correct this. The 1950pro did not allow this, and instead just stayed in 3D mode where it should be, which in turn made folding much easer.
Also, the GUI client has a tendancy to cause more issues than the console client, but the console client can be more flakey to set up.
If you can give me a bit more info on how you are running it, as well as the amount of memory on your ATI card, I can help you track down the issue.
EDIT: There is a lot of good information about the GPU folding client in this thread: http://forum.folding-community.org/ftopic17527.html
It is a bit lengthy, but addresses this specific issue.