Version and / or Patch Used: 1.1
Developer Homepage: http://www.futuremark.com
Product Homepage: http://www.3dmark.com/3dmark11/
3DMark 11 is the latest version of the world's most popular benchmark. Designed to measure your PC's gaming performance, 3DMark 11 makes extensive use of all the new features in DirectX 11, including tessellation, compute shaders, and multi-threading. Trusted by gamers worldwide to give accurate and unbiased results, 3DMark 11 is the best way to consistently and reliably test DirectX 11 under game-like loads.
3DMark 11 sees the Sapphire R9 290 4GB CrossFire setup perform extremely well. You can see that it offers quite a large increase over the R9 280X 3GB CrossFire setup, which is of course the model below. Compared to the R9 290X 4GB CrossFire setup, you can see the difference is quite minimal.