Until now, the only graphics cards supported by the Folding@home GPU client were ATI’s Radeon 16xx, 18xx and 19xx series cards. However, a new beta version is now available from
here which will allow owners of HD 2xxx and 3xxx cards to contribute some of their graphics processing power to the project. The Folding@home project is run by Stanford University and simulates protein folding in the hope of finding cures for diseases including Alzheimer's, Mad Cow (BSE), CJD, ALS, Huntington's, Parkinson's disease and many Cancers. Even if you do not own a supported graphics card, you can still download the standard
CPU client and contribute your idle processing power – all you need is an internet connection. To find out more, why not take a look at
techPowerUp!’s Folding@home team?
Source: Folding@home Support Forum