The Z Display Z24 has a maximum resolution of 2160p. That's over two times the resolution of the most frequently found video mode of 1080p (which is also found on this PC screen). This PC display also have a 1600p and 720p video mode.
A 2160p video mode is in fact the best resolution across all medium monitors that are a comparable age to the Z Display Z24.
The worst resolution across comparable types of flatpanel monitor is 480p.