ATI has released its 8.12 version graphics drivers. Our sister site, Voodoo Extreme, reports that that the update attempts to fix issues related to Grand Theft Auto IV. The PC version of Rockstar's free-roaming action game has received criticism for being poorly optimized.

In addition to GTA IV fixes, Voodoo Extreme reports that the update attempts to tweak a variety of other games:

3DMark Vantage DX10 – Performance gains of up to 5% for Single and Crossfire mode. Performance gains were noticed on HD46xx, HD4550 and HD4350.
Call of Duty: World at War DX9 – Performance gains of up to 21% for Single and Crossfire mode. Performance gains were noticed on all Radeon HD48xx.
Crysis DX10 – Performance gains of up to 25% for Single and Crossfire mode. Performance gains were noticed on all Radeon HD4xxx.
Crysis Warhead DX10 – Performance gains of up to 13% for Single card mode and up to 16% for Crossfire mode. Performance gains were noticed on all Radeon HD4xxx.
Devil May Cry 4 DX10 – Performance gains of up to 6% for Single and Crossfire mode. Performance gains were noticed on all Radeon HD4xxx and HD38xx.
Fallout 3 – Performance gains of up to 15% for Single card mode.
Far Cry 2 DX10 – Performance gains of up to 10% for Single card mode and up to 57% in Crossfire mode. Performance gains were noticed on all Radeon HD4xxx and HD38xx.
F.E.A.R. DX9 – Performance gains of up to 6% for Single and Crossfire mode. Performance gains were noticed on Radeon HD4870X2 and HD4870.
Hellgate: London DX10 – Performance gains of up to 6% for Single card mode and up to 10% for Crossfire mode. Performance gains were noticed on all Radeon HD4xxx.
Left 4 Dead DX9 – Performance gains of up to 10% for Single card mode and up to 5% for Crossfire mode. Performance gains were noticed on all Radeon HD4870 series.
Lost Planet Colonies DX10 – Performance gains of up to 10% for Single and Crossfire mode. Performance gains were noticed on all Radeon HD4xxx and HD38xx.
Prey OGL – Performance gains of up to 15% for Crossfire mode. Performance gains were noticed on Radeon HD4870 1GB products, HD46xx, HD45xx.
S.T.A.L.K.E.R.: Clear Sky – Performance gains of up to 10% for Crossfire mode. Performance gains were noticed on all Radeon HD4xxx and HD38xx.
Unreal Tournament 3 DX9 – Performance gains of up to 18% for Single card mode and up to 15% in Crossfire mode, especially in cases where AA is enabled. Performance gains were noticed on all Radeon HD4xxx and HD38xx.
ATI has released the update for a wide number of operating systems. To download the right driver for you, head on over to Voodoo Extreme.

http://uk.pc.ign.com/articles/937/937272p1.html