It's all well and good buying a 4K 120Hz gaming monitor if you're ... The other option, for the more competitive gamer, is a 1080p 240Hz gaming monitor. You'll be choosing speed over fidelity ...
1080p alternatives will better fit the brief. 4K monitors can pack substantially more pixels (3840 x 2160) compared to 1440p (2560 x 1440), resulting in sharper visuals and an extra layer of clarity.
Keep in mind that monitors at the very least should be 1080p resolution, which is really the bare minimum HD resolution these days, though preferably 1440p (or even 4K, if you can afford it).
Ultrawide monitors typically have a 21:9 aspect ratio (as opposed to the 16:9 ratio of 1080p, 1440p, and 4K) and offer a much wider field of view than a standard monitor, but they take up a lot of ...