OPTION 1
If you are just gaming, throw $1000 at a video card (1080Ti), buy a CPU water block ($120-$160 depending on brand), and a case that supports a 240mm or 360mm RAD depending on the size of the water block. Overclock the CPU/RAM. Maybe throw another $100 at a matching 6GB stick set for your RAM.
Voila, you have a $1500 upgrade and gaming will be
excellent.
That said, if you are gaming at 1080p, this might be overkill. At 1440p, it will be perfect.
OPTION 2
Get a GSync 1440p monitor
https://www.memoryexpress.com/Products/MX59699 - $850 on sale right now
Get a GTX 1080
https://www.memoryexpress.com/Products/MX62942 - $710
For 1560 + Tax, you will have an
immaculately better gaming experience.
I'm not even joking, option #2 is more recommendable from me.