GetVandalized (09-03-2015)
Just sell your CPU,MOBO and RAM and upgrade to next gen,get 6th gen intel CPU - Intel i7-6600K
For MOBO get Gigabyte Z170
For RAM upgrade to DDR4 - Crucial Ballistix Sport 16GB Kit
With all of that get a cheap air aftermarket cooler like Hyper evo 212 or if you can afford for water cooling get corsair h100.
GetVandalized (09-03-2015)
intel i7 4790k
Hashirama senju (08-30-2015)
Like Ultrawtf said, you might wanna checkout the latest Skylake 6700k. The 6700k doesn't represent a huge performance increase(along the lines of 10% over the 4790k) but if you can find it for a similar price than you should take a look at it. However, that would mean also having to upgrade your RAM. If you wanna have a more "future proof" system, than I guess the Skylake i7 is an option as well.
i7 4790k with MSI z97s Krait Edition and Cooler Master 412S. Will render anything you throw at it with ease.