Comment by accrual
14 hours ago
Anecdata but I played games at 4K on a 4GHz Haswell (2013) + 1080 Ti (2017). Definitely faster at 2K but 4K was servicable. It's probably less true now that I'm 1+ years away from the hardware, but 4K gameplay is surprisingly accessible for modest hardware IMO.
I currently have a 4k monitor (+nv4070-super) and it does handle some games fine at 4k but for others I need to use 2k w/ upscaling. Depends on the game.