The screen has no dead pixels either, or my eyes are too bad to be seen what. Colors and sharpness are sensational.
Yes to the OS space savings compared with the PA271W is very large, under Windows 7 font size and icons are very small, but can be enlarged. Under Windows 8.1, the space gain is less, but everything is sharp and easy to read. I use the screen on a Windows 7 computer.
Anyone wishing to use the screen to play, should be careful. A GTX970 is already struggling in WoW at full resolution.
The settings are made via a single button at the bottom of the screen and are easy to perform.
Since reviews exist on the relevant sites, I will confine myself here to a very subjective "Great screen" (Graphics, Software Development, Text Processing).