Currently i have a setup of i5 4690k unfortunately my motherboard is dead, so i want to know does upgrading to i5 8400 is needed in order to play 2018 games (far cry 5, rdr2,pubg etc) and i would like to get GTX 1070 for my current setup or i5 8400 setup. My last gpu is 970 which ive sold it last year since that ive been gaming on my PS4. If the 8400 is not worth i will buy the 1150 to replace my faulty motherboard and buy the 1070, if its neccesary to upgrade i will build a new setup of 1151 socket. Gaming on 1080p only and would like my games on ultra and 60fps.