I find 4k is nice on computer monitors because you can shut off anti-aliasing entirely and still leave jagged edges behind. 1440p isn’t quite enough to get there.
Also, there’s some interesting ideas among emulator writers about using those extra pixels to create more accurate CRT-like effects.
Oh yeah, I have read some very cool things about emulators and being able to simulate the individual phosphors with 4K resolution. I have always been a sucker for clean crisp pixels (that’s what I was trying to achieve on the shitty old CRT I had for my SNES) so I haven’t jumped into the latest on crt shaders myself.
But anti-aliasing needs far less performance. And you need to mess about with scaling on a 4k monitor which is always a pain. 1440p for life IMHO
