I don’t play that many games anymore but did recently play Bioshock2. I had all the game options maxed and it was silky smooth. Graphics is nVidia 8800, about 2 generations old. Also Call of Duty with all games maxed. Those games were built for xBox/PS3 so any new PC is overkill x8.
Xbox and PS3 do not play the games at full HD. Some are 720p others are even lower and scaled up.
The reason people build gaming rigs is to play these games at full HD or higher resolution.
I mentioned Crysis because it is a game that brought last generation computers and graphics cards to it’s knees. Thus when any new hardware release was followed by the question, does it play Crysis.