jankerson :
Rexper :
If you CPU is currently the minitling factor while playing, you can experience uplifts of 30% performance. If your CPU isn't the limiting factor, you'll see little framerate improvement if any.
Remember FPS increases only matter/are noticeable until they exceed your monitor's refresh rate. So if your monitor is 60hz, and you are currently getting a stable 65+ FPS, no hardware upgrade will give you better noticeable performance.
I doubt he is getting anything near 60 FPS in PUBG with a R9 280X no matter what CPU he is using.
I am thinking 30 FPS if he is lucky at low settings, that's an old card.
And that R9 280X will bottleneck the i7 7700K.
Any gpu can perform any frame rate. It just depends on the graphics settings / resolution in play.
Also, bottlenecking doesn't matter. Any gpu can bottleneck and CPU, vice versa, what difference does it make? As long as CPU performs to FPS goals / refresh rate, and gpu performs to graphics settings, the CPU/gpu combination is fine.
They could be playing low settings at 720p. That's could be enough for 60fps as long as CPU is fine.