Stealthy

I saw a discussion on this, but it did not meet my answer. I play games such as CS:GO, Battlefield 4 (and 1 in the future), World of Tanks, DayZ and Miscreated (maybe GTA in the future) I'd like to play these games with medium settings and I guess I could settle for average and at least have 70-100fps. Looking at the 2500K since its affordable on eBay, but I thought I'd ask if it would meet my standards? Thanks!