This particular software suite updates both the AMD Display Driver (version 8.351.3), and the Catalyst™ Control Center (version 7.3). This unified driver has been further enhanced to provide the highest level of power, performance, and reliability. The AMD Catalyst™ software suite is the ultimate in performance and stability.
The following section provides information on new features introduced in this release of Catalyst™.
OpenGL CrossFire™ Support Under Windows Vista
Catalyst™ 7.3 introduces OpenGL CrossFire™ support for the entire ATI Radeon™ X1000 product series under Microsoft Vista. Users will see significant performance gains in a number of applications when running in CrossFire™ mode under Windows Vista.
CrossFire™ Enhancements for Windows Vista
Catalyst™ 7.3 includes CrossFire™ enhancements for Windows Vista that enable the Alternate Frame Rendering (AFR) CrossFire™ rendering mode by default, enabling performance benefits for all AFR compatible applications immediately (including newly released applications that have not been officially profiled for CrossFire™). Future Catalyst™ releases will add further CrossFire™ performance gains once new applications have been profiled specifically for CrossFire™.
Dark Messiah Might and Magic performance improves 12.5% or greater on all Radeon™ X1000 series configurations when running in CrossFire™ mode under both the Windows XP and Windows Vista operating systems. Larger gains of 60% or more can be seen on high end products.
To read the complete release notes please go to https://a248.e.akamai.net/f/674/9206/0/www2.ati.com/drivers/Catalyst_73_release_notes.html
Here's other similar drivers that are different versions or releases for different operating systems: