As was suggested in the RDNA thread, if you are willing to go used, one can get 2 Xeon X5675s and a motherboard for not much more than  the price of the i7-4770S CPU alone and it would be faster; moreso if overclocked.....

Agree on this too I've X5670 with Asus P6T SE and its overclock'd to 4.2GHz and performance in multithreaded application such as rendering is faster than most newer i7(although i7-5820k is faster,but he cost 389USD)

Really depends on more factors,but I would go with older Xeon like X5675 or 5690 and if you can or if you will find good EVGA SR-2 and you have awesome machine with 24 threads(each CPU with 12 threads) and OC capability with good cooling up to 4.4GHz each

Thanks,Jura