ATI today released a beta version of this months Catalyst 5.10 release. This hotfix includes the reported "tool" which allows for 35% performance increases in Doom 3 benchmark tests. The hotfix reportedly also includes fixes for Quake 4 and X1K series users running Serious Sam 2 Note that this beta driver is only for Windows XP and includes ATIs Catalyst Control Center.
This is BETA software!, please use caution when installing it on your system
View: Knowledge Base Article
Download: Catalyst 5.10a w/Catalyst Control Center (Windows XP - 47.4MB)