2600x with an R390?

Hey everyone, I'm upgrading from an i5-4460, and I was looking at going with a 2600x, which means changing motherboard and going to ddr4 ram (finally). But, I was wondering if I could stretch the use out of my R390. I know it's getting older, but I haven't really noticed any huge performance issues in most games, which can be anywhere from Dota/league to single-player RPGs.

Just curious on your guys' opinion, since I'm not sure about bottlenecking.