Philips 43PUx4900 as a PC monitor

This post is going to describe an UltraHD  (4k) TV being used as a computer monitor (so this is NOT an audio-video signal receiver).
The screen has 43 inches and native resolution of 3840(×3)x2160 and can do 60Hz. As far as I can tell, this is an RGB matrix with every pixel made of 3 subpixels (r,g,b).
The resolution is too high - 50" screen would be better for UltraHD.
There is no 3D display (would be nice for 3D games).
Screen refresh is good. If you are already fooled by manufacturers then this needs some explanation. Manufacturers would talk about 1600Hz or more refresh rate - but it is a lie as screen is divided into pieces and they are adding values. This screen is told to be 400Hz and it can do full 100Hz what is great (currently best TV's can do up to 200Hz). That is like if you had 4 kids and every was 2 years old... and you were saying that you have 1 child who is 8 years old (as 4x2=8). Another lie is... what is 1Hz. In the past manufacturers provided info how long it would take to switch a single point on the screen from white to black and to white back again. Later on they cheated giving gray-to-gray-to-gray. So this value is saying nothing and it is usually measured in milliseconds (ms). They just wanted to fool people with crazy numbers.
Let's go with the price and features. It costs around $400 so is quite cheap as for 43" UltraHD display. Has no smartTV nor other crap. Like I already mentioned - I'm not considering this as a TV. And "smartTV" can be made by... connecting this to a computer with better results. Although you loose a feature of using 1 remote to control both the "power on" and "smart features".

To use the screen you might connect it using HDMI and optionally ARC (something to connect audio FROM the display). Probably better is to connect PC directly to the speakers.
It is pointless to buy extra expensive gold plated cables. The HDMI signal is digital thus (unless you have way over 5m cable) any cable should be just fine. And there is no such thing as "HDMI 2.0 cable" - just an ordinary cable that costs $2 but has "HDMI certificate sticker".

Annoying features.
The screen has "micro dimming" feature. It can improve quality of a movie but leads to anger only when used with a pc as your screen brightness goes crazy. To turn it off... switch display mode to "picture".
Also remember to avoid static pictures or the screen on without signal - it should not be a big deal but might burn some "ghost image" over the screen.
Windows 10 with this screen does nasty things thanks to its builtin scaling (which cannot be disabled) as "clear type" makes fonts unreadable - just turn font smoothing off.

It has 3 HDMI ports, is quite thick as for LCD and has USB port. More ports are there - refer to Philips docs.

Overall it looks great from 30 cm distance. I'd like to use 50" or more as an UltraHD PC monitor.