I've got an i7 2600k running at 4.5GHz (unfortunately I can't seem to get it stable past this number), 32Gb RAM, along with a GTX1080, I play in 144Hz 1080p. Everything I play runs on max quality and most games run at over 100fps most of the time... The only thing I started to see an issue with the other day was running a webcam chat with discord whilst gaming - that maxed out my CPU, though I didn't actually notice any drops in anything. I also run a plex server, and sometimes stream on twitch, along with multiple other things running in the background at all times, and yet I still am struggling to justify spending 900 pounds on a newer processor (after DDR4 and mobo as well). I really want to as I have the upgrade itch quite bad lol, but I keep holding back thinking it's too much money to spend for minimal gains. The benchmarks look good on the later processors, but how often am I really unzipping things in 7-zip that the 30 second saving actually justifies that cost?