I'll +1 prit's suggestion of the i5-4690k, it will save you money and is made for OC'ing. Since your mobo doesn't support SLI you might want to upgrade to the GTX 780 if you are willing to spend the extra money, but your current card is killer. I have the 4690k and GTX 770 and I run BF4 with everything on ultra.
I have heard the Corsair CX series aren't great PSU's though, might want to consider something else.
J