Launched in the year 2022, the 65QNED99UQA is a 65" 8K TV from LG. It comes with a True 10-bit IPS panel.
The maximum resolution it can display is 7680 x 4320 with a refresh rate of 120 Hz and a pixel density of 136 ppi.
Picture Quality
Now, the very next spec of a display that impacts picture quality is Color Gamut.
LG did not provide a color gamut specification for this TV. But don't worry, we have other means to guess that.
As this TV features amassive 65 inch screen, it won't come with a cheap panel, so here we can assume its equivalent sRGB coverage to be 90-100% or above. Undoubtedly The color accuracy on this TV should be Lifelike! It will produce color accurate images AS IT IS intended.
Understanding Color Gamut
Color gamut spec of a display indicates the range of colors that it can show.
A display with poor color reproduction will produce undersaturated colors that will not be pretty to look at.
Different manufacturers use different measurement standards to define color gamut. Such as — sRGB (most popular), NTSC, DCI P3 Adobe RGB and rec.2020.
But you don't need to worry about that, here is a chart that you can use to choose a TV with good color accuracy.
After color gamut, the static contrast specification of a TV holds almost equal role in picture quality.
What is Static Contrast ratio ?
The static contrast ratio of a TV corresponds to its Black levels. A Display with low static contrast ratio (less than 1000:1) will not produce deep blacks. Also, such displays often suffer from backlight bleeds such as this:

Clearly this will affect your viewing experience considerably, especially in a dark room.
Also, a TV with high constrast ratio allows you to see more details. So, resolution and static contrast ratio go hand in hand in a sense.
If given a choice, I will prefer a FHD TV with high contrast ratio over a 4K TV with low contrast ratio.
This TV comes with a static contrast ratio of 10000:1., enough to produce deep blacks. For the record, it also comes with local dimming backlight which is a plus.
Dolby Vision, HDR10 Pro, HLG (Hybrid Log Gamma) and Dolby Vision IQ are also supported on this TV, so that's a plus.
As for brightness, it can go as bright as 250 nits, powered by Mini LED backlight technology.
Gaming Performance
Now if you are planning to use the TV other than watching videos — say as a PC monitor or Gaming, you would want to get a TV that features the lowest input lag. For gaming however, both the input lag and response time impacts the performance.
Unfortunately, LG did not specify the input lag on this unit. But as this is not a cheap TV from LG, we can expect an input lag of less than 20ms.
Understanding Input lag and response time
This lag is the latency at which your device inputs changes the content of your display. For casual Non-FPS games, input lag doesn't matter much.
Although for better experience, get a TV that has an input lag and response time of < 20ms.
Dimensions and Ergonomics
The TV measures 65 inches vertically and 65.55 inches horizontally.
It is just 1.16 inches thick. In total it weighs 41.6 KGs (including stand). Without stand, it weighs 38.2 Kilograms. So plan your space accordingly.
Speaking of ergonomics — a VESA mount with interface size of 400 x 400 mm is provided for wall-mounting. The unit doesn't come with Swivel, Tilt or Pivot support.
Hardware and Audio
The core of this TV is powered by a Quad Core CPU. There is no mention on the total RAM on this TV.
The Operating System on this TV is webOS 22.
For display connectivity, there is four HDMI 2.1 ports on this TV.
To connect USB devices, it includes — 2x USB 2.0 and 1x USB 3.0. Other connectivity ports include — 1x IR Out, 1x RS232 (C), 1x Cable/Antenna In (F-type female) and 1x Ethernet RJ45.
Wireless connectivity options on this TV include a 5Ghz Wi-Fi, 2.5 Ghz Wi-Fi, Wifi-Direct, Bluetooth 5.0 and DLNA.
The Audio unit of this TV is powered by 4 x 10W built-in speakers. It also comes with a built-in subwoofer. So you may not have to invest on any external sound system.
In terms of power consumption, on average, this TV uses around 114.24W. On standby, it takes 0.5 W.
For powering this unit, you'll require an 220 V - 240 V/50 Hz - 60 Hz outlet.