FYI at monitor resolutions above 1080p, the less your CPU speed matters. I have done a *lot* of benchmark tests with my 4690K and 970 SLI rig. Crysis trilogy, Far Cray 3-4, Witcher 3, BF3-4, Fallout 4, Project Cars, DiRT Rally, Grid Autosport. Probably a few others I can't think of right now. I noticed very little FPS improvement when I ran my CPU at core stock speed 3.5GHz and overclocked to 4.7GHz. The biggest FPS improvement was in Autosport of about 10%. Just not enough to warrant the increased power and heat use for me, especially in the warm months.
Now for video editing, that's a different story. I cut my rendering time by 35% in Sony Vegas Studio running at 4.7GHz using the CPU for rendering. What normally took ten minutes...