AMD announced recently that they are releasing the next version of their Catalyst driver, 8.12. It’s currently available for download from their site. The new version of the driver includes speed increases for some of the most popular games, along with improved video transcoding and filters.
On the other side of things, Nvidia’s new 180.84 beta drivers have been released in response to issues with GTA IV performance, and while some users are reporting up to an up to 10 FPS frame rate improvement, most are reporting no change at all.
In some cases, users have been reporting that the frame rate has actually even dropped, or that the new drivers have decreased stability.
Given the fact that the drivers are still very much in beta, it’s probably best to skip them for now.