The QN55QN95B is a 55 inch 4K TV from Samsung. It was launched in 2022. It features a True 10-bit IPS panel with Anti-glare/Matte finish.
The maximum resolution it can display is 3840 x 2160 @ 120 Hz with a pixel density of 80 ppi.
Picture Quality
Now, the next important specification of a display that impacts picture quality is Color Gamut.
The Samsung QN55QN95B features a DCI P3 gamut coverage of 100%. Incase you're wondering, this is equivalent to 136.36% sRGB coverage. The color quality on this TV should be Lifelike!
What Color Gamut means ?
Color gamut spec of a display is the measurement of the range of colors that the TV can display.
Meaning, this specification determines the ability of a TV to produce accurate colors. A display with low gamut coverage will miss out on some colors (such as deep red), thus producing a "washed out" picture.
It is specified in different units - sRGB,sRGB (standard RGB), NTSC, DCI P3 etc. It is upto the manufacturer which one they choose.
In case of this TV, its color gamut is specified using DCI P3.
But you don't need to worry about that, below is a chart that will help you choosing a TV with good color accuracy.
After color gamut, the static contrast ratio of a TV holds almost equal role in picture quality.
Why its important?
A TV with low static contrast ratio will not produce deep blacks and can bleed backlight as shown in the images below:

The above TV's static contrast is rated 800:1. So make sure you get a TV with a static contrast of >= 1000:1. Ofcourse, More the better.
Also, a TV with high constrast ratio enables you to see more details. So, resolution and static contrast ratio go hand in hand in a sense.
If given a choice, always 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., good enough to display deep blacks. The panel comes with local dimming technology which is a plus.
HDR is also supported on this TV in form of HDR10, HDR10+, HDR10+ Adaptive, HDR10+ Gaming, HLG (Hybrid Log Gamma) and Quantum HDR 32X.
Coming to brightness, the peak brightness it can achieve is 250 nits. The backlight used on the panel is Mini LED.
Gaming Performance
If you are planning to use your TV solely for content consumption, you can safely ignore these specifications. But if you are also planning to use the TV for playing games or use it as a PC monitor, you should get a TV that features the lowest input lag and response time.
The input lag on the Samsung QN55QN95B is 6 ms and its minimum response time is N/A. For a TV, its the best you can get for gaming.
Understanding Input lag and response time
This lag is the amount of time at which your key-presses or mouse movements changes the content of your TV. 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 has an input lag and response time of < 20ms.
Dimensions and Ergonomics
Vertically, the TV measures 55 inches and horizontally 48.35 inches. In terms of thickness, it is 0.69 inches thick. Overall this TV weighs approximately 24.2 Kgs (including stand). Without stand, it weighs 16.1 kgs.
Now, coming to ergonomics — a VESA mount with interface size of 400 x 300 mm is provided for wall-mounting. Swivel, Tilt or Pivot features are not supported on this unit.
Hardware and Audio
The internals of Samsung QN55QN95B is powered by Quad Core CPU. There is no mention on the total available RAM on this TV.
To power its UI, the TV runs Tizen 6.5 Operating System.
For display connectivity, Samsung has provided four HDMI 2.1 ports on this TV.
To connect USB devices, you will have two USB 2.0 ports. Other connectivity ports include — 1x Cable/Antenna In (F-type female), 1x RS232 (C) and 1x Ethernet RJ45.
For wireless connectivity on this TV, you will have — Wi-Fi (5Ghz + 2.5Ghz), Wifi-Direct, Bluetooth and DLNA.
Now, for audio, Samsung has provided 4 x 5W built-in speakers on the TV. It also comes with a built-in sub-woofer. So you don't have to invest on an external sound system.
As for power consumption, on average, this TV uses around 93W and on standby, it uses 0.5 W.
For powering this unit, you will require either a 110V or 220V outlet @ 50Hz-60Hz.