I fear you are overthinking things. It would be a good idea to look at some monitors in the flesh first, decide on what you like and buy that. Then select the graphics graphics card to match the monitor. It doesn't make sense to fixate on a top of the range GPU and then worry about a suitable monitor - especially trying to calculate how may pixels per second you might see. It is useful only in working out how hard your GPU might need to work. For a 3080Ti, you probably need £800+ for a suitable monitor.