Molti dicono che non cambi nulla da i 4.7, ma nella release notes si legge:
Performance Improvements
As with most CATALYST™ releases performance has increased in various situations. The following performance gains are noticed:
Direct3D driver efficiency has improved considerably. Significant performance gains are noted in multiple "CPU-bound" cases, including 3DMark2001, Aquamark 3, Comanche4, Dungeon Siege, and Unreal Tournament 2003 and 2004. Typical improvements are in the 1-5% range.
OpenGL driver efficiency is also improved. Older OpenGL games such as Quake III Arena and Wolfenstein - Enemy Territory show small improvement (1-2%) at low resolutions. Call of Duty framerates are up approximately 4%.
Doom3 improves considerably more (as much as 12% on some product configurations) as a result of the same software efficiency improvements.