The 75QNED90UQA is a 75 inch 4K TV from LG, launched in the year 2022. It features a True 10-bit IPS panel. It can display a max resolution of 3840 x 2160 @ 120 Hz with a pixel density of 59 ppi.
Picture Quality
After screen size and resolution, the next most important feature of a display is its Color Reproduction, which is defined by its color gamut specification.
This TV doesn't provide a color gamut specification, so we have to make an assumption based on its panel type. As this TV features a big 75 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 quality on this TV will be Lifelike! Meaning it is capable of producing accurate colors out of the box.
Understanding Color Gamut
Color gamut spec of a TV indicates the range of colors that the TV can produce.
In other words, this specification tells the ability of a display to produce accurate colors. A panel with low gamut coverage will miss out on some colors (such as deep red), the result would be a "washed out" picture quality.
Different manufacturers use different measurement standards to define color gamut. Such as — sRGB, NTSC, DCI P3 to name a few.
But don't worry, here is a chart that you can use to choose a TV with good color accuracy.
Now, after color gamut, the static contrast ratio of a TV holds almost equal role in picture quality.
The importance of static contrast ratio
There are two types of contrast specifications for a TV. Static and Dynamic. We are interested in static contrast ratio as dynamic doesn't matter much.
This defines the intensity of black levels. That is, a TV with SC ratio < 1000:1 may produce black images something like this:
Moreover, such TVs are likely to suffer from backlight bleeds that will affect your experience — as shown below.
The image is an example of another display, it is not this oneOther than black levels, 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 features a static contrast ratio of 8000:1., enough to display deep blacks. For the record, it also comes with local dimming feature which is a plus.
Dolby Vision, HDR10 Pro, HLG (Hybrid Log Gamma) and Dolby Vision IQ are also supported on this TV.
Coming to brightness, the peak luminance the LG 75QNED90UQA can produce is 250 nits, which is powered by Mini LED backlight.
Gaming Performance
Now if you are going to use your TV other than using it as a TV — say as a PC monitor or for gaming purposes, you would want to get a TV that features the lowest input lag. For gaming however, both input lag and response time impacts the performance.
Sadly, there is no specification for input lag on this TV. Now, since 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 amount of time at which your inputs changes the content of your display. Though, this won't matter much if you aren't into competitive/FPS games like call of duty.
Although for better experience, get a TV that features an input lag and response time of less than 20ms.
Ergonomics and Dimensions
Coming to ergonomics — a VESA mount with interface size of 400 x 400 mm is provided for wall-mounting. There is no Swivel, Tilt or Pivot feature support in this TV.
Vertically, the TV measures 75 inches and horizontally 65.55 inches.
It is 1.16 inches thick. Overall, it weighs around 36.2 kgs.
Hardware and Audio
The core of LG 75QNED90UQA is powered by 4-Core CPU. However, we could'nt find any info on the available RAM on this TV.
The UI on this TV is powered by webOS 22 Operating System.
For display connectivity, LG has provided two HDMI 2.0 ports and two HDMI 2.1 ports on this TV.
For connecting USB devices, you will have two USB 2.0 ports. Other connectivity ports include — 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 2 x 10W built-in speakers. It also comes with a built-in subwoofer. So you don't have to invest on any external sound system.
In terms of power usage, the TV uses 157.2W on average and 0.5W on standby.
It supports a power outlet of 100 V - 120 V/50 Hz - 60 Hz.
