CPU upgrade needed?

Schpork

Prominent
Aug 8, 2017
2
0
510
I have a rig that's about 4 years now:
i7-4770K
GeForce GTX 780 Ti
16GB DDR3
ASUS Z87-A Motherboard

I've decided to upgrade the GPU to a 1080 Ti and I'm wondering if I will be hindered by keeping the current CPU? Should I upgrade to a new CPU as well?
 

Schpork

Prominent
Aug 8, 2017
2
0
510


Not quite, I have a WQHD monitor running at 2560 x 1440.