3DMark 11 is designed for testing DirectX 11 hardware running on Windows 7 and Windows Vista the benchmark includes six all new benchmark tests that make extensive use of all the new features in DirectX 11 including tessellation, compute shaders and multi-threading.
After running the tests 3DMark gives your system a score with larger numbers indicating better performance. Trusted by gamers worldwide to give accurate and unbiased results, 3DMark 11 is the best way to test DirectX 11 under game-like loads.
If you want to learn more about this benchmark, or to buy it yourself, head over to this page.
Direct X 11 performance from the AMD hardware is still impressive. Looking at the final results we can see that both HD5830 and HD5850 Xtreme in CrossfireX manage to outperform an overclocked GTX580. Considering a overclocked GTX580 costs over £400 and the HD 5830 CFx solution is £160, this is certainly worth highlighting.