If you are running the typical 60 Hz monitor rather than 120/144, anything over 60 FPS doesn't really matter. If you're gaming on a 60 Hz monitor, the AMD CPUs will be ok in 97% of games, with exceptions like ARMA, DayZ, and probably some others that I can't think of at the moment.
All depends on your preference. Personally, my eyes can tell no difference between 60 and 60+ FPS, so I'd go for the eye candy. Yes, the CPU is usually the limiting factor at low textures/resolutions, and the GPU at higher resolutions/textures.