Earlier this month, Catalyst 8.7 BETA was leaked. This supports all DirectX 9 & 10 ATI Radeon video cards, which includes the Radeon 95xx+, Xxxx+, X1xxx, HD2xxx, HD3xxx, and the newly released HD4xxx series. This driver set seems to work better for HD4xxx users, as the Catalyst driver that comes with the HD4850/4870 card seems to be bugged. As changes are unknown, use at your own risk.
Download Link:
(Courtesy of Guru3D.com.)
Windows XP (32/64-Bit): http://downloads.guru3d.com/ATI-Catalys ... -1983.html
Windows Vista (32/64-Bit): http://downloads.guru3d.com/ATI-Catalys ... -1982.html
Installation Instructions:
1.) Uninstall the ATI drivers from "Program Add/Remove"
2.) Install and Run Driver Sweeper with "ATI Display" selected. (It's recommended to do this, so that left over data from old graphics drivers don't conflict with the new ones.)
3.) Restart the computer.
4.) Install the new Catalyst drivers.