Yes it should be obvious topic for anyone, but it wasnt for you because you were still ignoring obvious limits of human vision and the most important factor, the viewing distance. So I have quoted detailed article for you to back up my arguments, so rather than acting salty just read it and accept the facts. Human vision has limits and at further distance HD and 4K will appear exactly the same. Anyway after watching DF analysis in regards to RTX in Battlefield 5 it looks like RTX effects can be optimised much better and probably run at 60fps even at higher resolutions. Current RTX games are using RTX effects at 1:1 parity with raster resolution (that's what DF have said), and RTX cores are obviously too slow for 1440p or 4K. So upscaled RTX effects should still look good at native 4K and run in much better framerate. If many new games will support RTX effects decently even at higher resolutions, then RTX cards will be as revolutionary as geforce 3 once were (we have seen games with shaders for the first time), because we will see many new amazing effects in games. I bet few years from now RTX geforce cards will be so fast game developers will start using RTX for basically everything . So maybe we will get photorealistic graphics in games sooner than expected . If RTX will adopt quickly on PC than maybe PS5 or Xbox 4 will also use something similar to RTX, because otherwise graphics quality on new console generation will look dated compared to PC with RTX effects .