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