Open GL performance improves for all ATI Radeonâ„¢ X1000 series products. Gains of up to 25% in Doom 3, 48% in Quake 4 and 21% in Prey can be seen on a variety of ATI Radeonâ„¢ X1000 cards. These performance gains are noticed under the Windows Vista operating system.
Link here https://a248.e.akamai.net/f/674/9206/0/www2.ati.com/drivers/Catalyst_72_release_notes.html
Link here https://a248.e.akamai.net/f/674/9206/0/www2.ati.com/drivers/Catalyst_72_release_notes.html