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.
The Blackfire Hammerhead performs very well in 3DMark 11. The RX 580 comes in around 2500 points faster than the RX 480-based DinoPC GT0, while it also beats out the other GTX 1060 cards on-test.
The X370 mobo would have been a good choice if the PSU could handle crossfire. The CPU is also a bit on the edge for crossfire – a 1600 or 1600X would have cut it imo. Then again, those two things would have driven up the price. I have to agree that a B350 mobo would have been the best choice.