This is my rest of the configuration, please help me suggest the best motherboard! (NO Asrock(Availability issues)) 1. Intel Core i7-3770k Processor 2. Asus ATI RADEON 7950 HD 3GB DDR5 Graphics card 4. Corsair Vengeance 8GB (2x4GB) RAM 5. 2TB seagate Barracuda (7200rpm) Hard Disk 6.Cooler Master HAF 912 combat with transparent acrylic side panel Cabinet 7. Seasonic S12II 620 Watts PSU(SMPS)
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Take a look at this comparison. It will help you see the differences.
For most gaming the biggest difference is going to the 2 PCI-E x16 (for 8x, 8x) for support of SLI or Xfire.
Do u need a wifi adapter? U can just get a Asus P8z77 v or Gigabyte ud5h with a wifi adapter given to u.