If you want something smooth for gaming but don't need the absolute best panel technology, this gets you most of the way there for less money. It's 27 inches with sharper-than-1080p resolution, and the 180Hz refresh means motion stays buttery in fast games — you'll see the difference coming from a 60Hz screen.
The IPS panel gives you decent colors that look consistent from different angles, which matters if you're not always sitting dead-center. Pixels switch fast enough (1ms) that you won't see blur trails behind moving objects in shooters or racing games. It's not the most vivid picture you can buy, but it's clean and gets out of your way.
The HDR label is basically decorative — it'll accept an HDR signal but the screen can't get bright enough or dark enough to make it pop like real HDR does. Treat it as a regular gaming monitor and you'll be happy with it.