It really depends on which resolution you want to play with, graphics quality and especially the game itself...
you could achieve like 500fps on a (terrible) game like CSGO provided there wasn't a cap, but doesnt matter how good your rig is, you'll likely never reach that much in.. say... assassins creed on ultra @ 4k/1440p
also, gotta know how much you're willing to spend... right off the bat if you have enough cash the best/mainstream combo nowadays is a 9700k/RTX 2080TI/32GB DDR 3200+... (9900k if you're filthy rich, otherwise not worth it)