We tested all motherboards in combination with an Intel Core i7 3770K processor, 4 GB (2x 2GB) Corsair Dominator DDR3-1600 CL8 memory, an OCZ Vertex 4 128GB SSD, a Cooler Master Real Power M850 power supply and Windows 7 x64.
The charts below have all of the benchmark results. As you can see the scores are quite close, and the differences are largely to blame on the different bClk levels and benchmark inaccuracies. The ASRock board scores in line with the other Z77 boards.
Performance is not what you should look at when deciding which motherboard to buy.