This is the cheap way into fast gaming on a big screen. It's 27 inches with a curve that wraps toward you, and it refreshes 165 times per second so motion in games stays smooth. The VA panel gives you deeper blacks than most budget screens, which helps when games get dark.
The catch is sharpness. At 1080p stretched across 27 inches, text and fine details look softer than you'd get on a smaller screen or higher resolution. If you sit arm's length away and mostly play games, you'll probably stop noticing. If you read a lot of text or do detailed work, the lack of crispness will bug you.
The HDR label doesn't mean much here — treat it as a regular bright screen and you won't be disappointed.