Thanks for the input as I said when I upgrade to the 30 series I'd rather pass this on to a friend then sell for dirt cheap to a stranger. He would probably only be using it for Cod/Minecraft.Somewhat yes, but I think you'll see a noticable improvement.
I tried out a 1080Ti in a 3570K and there was hardly any performance increase over a 780 in a selection of games (WoW was one of them and notoriously demanding of CPU). Your 4770K has HT and double the threads though.