This is a solid pick if you want a responsive gaming screen without blowing your budget. It's 27 inches at 1440p, so you get sharper detail than 1080p without needing the expensive graphics card a 4K screen demands. The 200Hz refresh (how smooth motion looks) keeps up with fast games, and pixels respond fast enough that you won't see blurry trails.
The screen uses an IPS panel, which means colors look natural from most angles and you don't get that washed-out look when you lean back. There's a USB-C port that carries video, so you can plug in a laptop with one cable when you're not gaming — handy for homework or work-from-home stuff between sessions.
The HDR label is mostly for the box. It'll make bright scenes a bit punchier, but don't expect the dramatic movie-theater pop real HDR gives.