Damn it! I built an i5-3570k in that motherboard for botting. Wish I had known about that CPU.
On the other hand, I think I read somewhere about someone doing some testing and finding that D3 didn't care much about hyperthreading, the threads weren't optimized for it and it essentially didn't help. I wish I could find the link, but if someone is agonizing over i5 vs i7, they may want to research that topic before deciding. 8 threads does not mean that they can each perform as well as 4 threads; running 2 threads per core is a way to maximize context switching efficiency and does not increase performance significantly in all workloads.