Question Why am I able to set 1280x960 resolution on 1440x900 monitor?

[ignasm265]

Why am I able to set 1280x960 and 1280x1024 resolutions in windows and games by default when my monitor can only support 900 vertical pixels? I'm just curious why. The monitor Is ASUS VW193D

 

[D-Finn]

The ability to do this is a type of anti-aliasing super long name for it and I can't think of it at the moment, but its basically a spoof so you can send a higher then native resolution to your monitor and then downsamples it back to your monitors native resolution again. It should create a shaper image on your monitor but it's not actually creating more pixels then your monitor already has
Hope this shitty explanation helps a little

Ordered Grid Super Sampling Anti-Aliasing is the name of it