I'd say you'll need a 3080 to play with everything at the highest settings and RT at 1080p or maybe 1440p. For 4K, you'll need a 3080Ti/3090.
That's without DLSS.
Please excuse my bad English.
Currently gaming on a PC with an i5-4670k@stock (for now), 16Gb RAM 1600 MHz and a GTX 1070
Steam / Live / NNID : jonxiquet Add me if you want, but I'm a single player gamer.