New Features

This release of Catalyst™ introduces an enhanced version of ATI Overdrive for the ATI Radeon™ HD 2600 Series and ATI Radeon™ HD 2400 Series. Users can now Over-clock both GPU engine and graphics memory clock speeds in Crossfire™ mode (and over-clock single ATI Radeon™ graphics accelerators as well). This version of ATI Overdrive also includes a new stress test application to verify any over-clocking speeds users may have configured (either manually or through the auto-tuning tool) on their ATI Radeon™ graphics accelerators.
Note: In CrossFire™ configuration, the OverDrive 5.0 test application will run only on first GPU and any unlinked GPUs. As a consequence auto-tuning of linked adapters will not be available in the Radeon™ 8.40 software driver release. Also, the Manual Test button will be grayed out if the selected GPU is Slave. Missing support is due to a limitation in current driver implementation and will be resolved in upcoming driver release.

Performance Improvements

The following performance improvements are noticed with Catalyst™ 7.8:

* Lost Planet DX10 with anti-aliasing improves 11% or greater on Radeon™ HD2900XT products
* Radeon™ HD2600 and Radeon™ HD2400 (single and CrossFire™) show improvements of as much as 6% in 3DMark 2006 and 3DMark 2005
* Serious Sam 2 with HDR enabled improves as much as 14.5% on Radeon™ HD2900, Radeon™ HD2600 and Radeon™ HD2400 products

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Release Notes