[Coda]

*whistle* That's a beast of a rig you got there, Suze. No, there's no reason to upgrade. You've already got a M.2 SSD for high-performance I/O and plenty of slower storage for content, more RAM than you're likely to ever use, and a GTX980 is (as mentioned above) better than a 1050. Given that most games really don't use all that much CPU power (they're primarily GPU- and I/O-constrained) you would be hard-pressed to find a machine that would give you a noticeable increase in performance even if you paid $3500 for it.

(Sure, if you landed a GTX1080 then you'd squeeze a few more FPS out of your games or you could crank up the quality settings a little more, but with those specs your current performance is probably so good that the improvement would just be incremental.)