https://www.pcgamer.com/can-i-use-a-4k-tv-as-a-computer-monitor/

In the very early days, computer monitors were just TVs, but then the HD revolution happened. Now we've got large 4K Ultra HD TVs with multiple HDMI 2.0 connections that cost less than a good monitor. Can you just use a 4K TV for PC gaming in place of a display, and would you want to?

Sceptre 43-inch 4K TV | $209.99 (save $60)Sceptre is a value-focused brand you might not be familiar with, but it's been making displays for over 30 years. This no-frills UHD TV has a 3840x2160 resolution, three HDMI 2.0 inputs (one MHL), and one HDMI 1.4 input. It's a slightly older model, but reviews show many happy users reporting no input lag.View Deal