Download the AMD Catalyst 13.11 Beta 8(18.104.22.168 October 29) driver. This Beta driver works with Windows 7, 8 and 8.1.
We have a discussion thread open on this driver right here. Again a new release, in this round it includes all the features found in the previous betas and brings improved (by up to 20%) CrossFire scaling in EA's Battlefield 4. The Catalyst 13.11 Beta 8 is available for Windows 8.1/8/7 and offers support for the Radeon R9, R7, HD 7000, HD 6000 and HD 5000 Series cards.
Feature Highlights of The AMD Catalyst 13.11 Beta8 Driver for Windows
Includes all Feature Highlights of the AMD Catalyst 13.11 Beta6
Increases AMD CrossFire™ scaling up to an additional 20% for Battlefield 4