A 1080p gaming monitor shows 1920 by 1080 pixels. It is the most common gaming resolution, it is the easiest for a graphics card to drive at high frame rates, and it suits the 144Hz and 165Hz refresh rates of the evidenced gaming line on this site. A buyer who wants the smoothest motion on a mid-range card will often do better at 1080p than at a higher resolution that the card cannot sustain.
The evidenced gaming line on this site, models ZE215, ZG24E and ZG27F, offers 1920 by 1080 alongside 2560 by 1440, with sizes from 21.5 to 32 inches. The 23.8 inch example specification recorded for that line is 1920 by 1080 at 144Hz with an IPS panel, and it is labelled as an example for that variant only, not as the specification of every size. A buyer should confirm the resolution and panel for a particular size in an enquiry.
1080p also suits smaller gaming displays, where the eye cannot resolve the extra pixels of a higher resolution at a normal viewing distance. On a 21.5 or 24 inch display at a desk, 1080p looks sharp, and the money saved against a higher resolution can go to a better refresh rate or a better stand. State the size and the graphics card in an enquiry if the choice is uncertain.
Order quantity and lead time are confirmed per model in enquiry, and prices are not published on this site.