Download the AMD Catalyst 14.7 RC3 (14.200.1004.0 August 11) driver. This driver works with Windows 7 and 8.1.
This update adds support for CrossFire and Dual Graphics for Plants vs. Zombies, Assassin's Creed IV shows improved CrossFire scaling (3840x2160 High Settings) up to 93% and there are improvements to be found with AOC monitors. We have a discussion thread open on this driver right here.
Feature Highlights of the AMD Catalyst 14.7 RC3 Driver for Windows
Includes all improvements found in the AMD Catalyst 14.7 RC driver
Display interface enhancements to improve 4k monitor performance and reduce flickering.
Improvements apply to the following products:
AMD Radeon R9 290 Series
AMD Radeon R9 270 Series
AMD Radeon HD 7800 Series
Even with these improvements, cable quality and other system variables can affect 4k performance. AMD recommends using DisplayPort 1.2 HBR2 certified cables with a length of 2m (~6 ft) or less when driving 4K monitors.
Wildstar: AMD Crossfire profile support
Lichdom: Single GPU and Multi-GPU performance enhancements
Watch Dogs: Smoother gameplay on single GPU and Multi-GPU configurations
Feature Highlights of the AMD Catalyst 14.7 RC Driver for Windows
Includes all improvements found in the AMD Catalyst™ 14.6 RC driver
AMD CrossFire™ and AMD Radeon™ Dual Graphics profile update for Plants vs. Zombies
Assassin's Creed IV - improved CrossFire scaling (3840x2160 High Settings) up to 93%
Collaboration with AOC has identified non-standard display timings as the root cause of 60Hz SST flickering exhibited by the AOC U2868PQU panel on certain AMD Radeon™ graphics cards. A software workaround has been implemented in AMD Catalyst 14.7 RC driver to resolve the display timing issues with this display.
Users are further encouraged to obtain newer display firmware from AOC that will resolve flickering at its origin.
Users are additionally advised to utilize DisplayPort-certified cables to ensure the integrity of the DisplayPort data connection.
Feature Highlights of the AMD Catalyst™ 14.6 RC Driver for Windows
Plants vs. Zombies (Direct3D performance improvements):
AMD Radeon R9 290X - 1920x1080 Ultra – improves up to 11%
AMD Radeon R9 290X - 2560x1600 Ultra – improves up to 15%