The 6 Best 4k TVs For PC Monitors - Fall 2019
Reviews

The best TV for use as a PC monitor is the LG 43UM7300. 43 inch might seem small for today's standards for a TV but if you are using it as a PC monitor and are sitting close to it, this TV will offer you an immersive experience. You will need a large desk, however, to place it on. It has wide viewing angles and the sides of the image remain accurate even when you sit close. The UM7300 has excellent low input lag for a responsive desktop experience, and very fast response time so there is very little blur trail behind the fast-moving mouse. It can display proper chroma 4:4:4 in any resolution, and thus text looks clear.

Unfortunately, just like most TVs, it uses PWM for dim the backlight at a frequency of 120Hz and this might bother some people. Also, its dark room performance is lacking due to the low contrast ratio.

Overall, the LG 43UM7200 is an excellent TV for use as a PC monitor.

If you often use the TV for presentations, and you find the size of the LG UM7300 limiting, then check out the Samsung QN55Q80R. It is an excellent TV that is available in size 55" and above but is also much more expensive. It has a VA panel, but thanks to the TV's 'Ultra Viewing Angle' layer, the image remains accurate for wider angles and can deliver a more uniform image if you sit up close. The input lag is very low and the TV gives off a very responsive feel. Text looks crisp in any resolution thanks to the support for proper chroma 4:4:4. Finally, the very fast response time leaves only a small blur trail behind fast-moving objects like your mouse.

Overall, if you want a 55 inch TV as a monitor, get the Samsung 55Q80R.

The Hisense H9F is the best budget TV for use as a PC monitor. It has a remarkably low input lag and ensures a responsive  PC using experience. It also supports the most common resolutions except the ones @120Hz but can display proper chroma 4:4:4 in the ones it supports thus displaying sharp text. It has great picture quality that looks great both in a dark or bright room.

Unfortunately, the image deteriorates when viewed from the side, but this shouldn't be an issue if you're sitting directly in front of the TV at a comfortable viewing distance. If however, you're too close, the edges of the screen appear non-uniform.

Overall, though, the H9F is a great overall TV that you can easily use as a PC monitor and comes at a budget price.