47.62"
26.79 "
55"
6'2"

Grundig 55GGU7900B

ABOUT THIS TV

Grundig 55GGU7900B 400x400 Image Grundig 55GGU7900B

Launched in the year 2022, the 55GGU7900B is a 55" 4K TV from Grundig. It features a 10-bit IPS panel.

The max. resolution it can display is 3840 x 2160 @ 60 Hz with a pixel density of 80 ppi.

Picture Quality

After screen size and resolution, the next most important feature of a display is its Color Reproduction Accuracy (defined by its color gamut specification).

Grundig did not provide a color gamut rating for this TV. So we have to take a guess. As this TV features a big 55 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. The color accuracy on this TV should be Lifelike! Meaning it will produce accurate colors AS IT IS intended.

Understanding the Color Gamut Specification

Color gamut spec of a display is the measurement of the range of colors that it can produce.

Meaning, this specification determines 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), thus producing a "washed out" picture.

Different manufacturers use different units to specify color gamut. Such as — sRGB (standard RGB), NTSC 1953, DCI P3 etc.

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.

Color Gamut Chart

After color gamut, next in the list is Static Contrast.

Understanding the static contrast ratio of a TV

A TV with low static contrast ratio will not produce deep blacks and possibly bleed backlight as shown in the below image:

Backlight bleed exampleThe image is an example of another display, it is not this one

The static contrast ratio of above TV is rated 800:1. So make sure you get a TV with a static contrast of >= 1000:1. Ofcourse, More the better.

Also note, static contrast ratio and resolution go hand in hand when it comes to details. To put it into perspective, a TV with low contrast ratio will show both dark gray and black as black, so lesser detail overall.

If given a choice, always prefer a FHD TV with high contrast ratio over a 4K TV with low contrast ratio.

We were not able to find a static contrast ratio specification for this TV. Once again we have to take a guess based on the TV's other specs. FYI — IPS panels come with a static contrast ratio between 700:1 - 1500:1. As for a 4K TV, we can assume the ratio of Grundig 55GGU7900B to be atleast 1200:1 or above.

HDR is also supported on this TV in form of HDR and HLG (Hybrid Log Gamma).

Coming to brightness, it is capable of producing a maximum brightness of 250 nits. The backlight of this TV is powered by Direct LED technology.

Gaming Performance

Now if you are going to use your TV other than watching videos — say as a PC monitor or for gaming purposes, make sure to take a TV that features the lowest input lag. For gaming, both input lag and response time impacts the performance.

Unfortunately, we cannot find the input lag specification for this unit. Now, since this is not a cheap TV from Grundig, we can expect an input lag of less than 20ms.

What is Input lag ?

This lag is the latency at which device inputs changes the content of the TV. Though, this won't matter much if you aren't into competitive/FPS games like call of duty.

But ideally, look for a TV that features an input lag and response time of less than 20ms.

Ergonomics and Dimensions

Now, speaking of ergonomics — a VESA mount with interface size of 300 x 300 mm is provided for wall-mounting. The unit doesn't come with either Swivel, Tilt or Pivot support.

The width of this TV is 49 inches while its height is 29.46 inches. Overall, it weighs 17.5 kgs. So plan your space accordingly.

Hardware and Audio

The chipset of this TV is powered by a Quad Core CPU. However, we could'nt find any information about the RAM on the TV's specsheet.

The UI on this TV is powered by Android TV Operating System.

For display connectivity, Grundig has provided three HDMI 2.0 ports on this TV.

For connecting USB devices, you will have two USB 2.0 ports. Other connectivity ports include — 1x Satellite In (F-type), 1x Antenna (RF), 1x CI+ 1.3 and 1x Ethernet RJ45.

For wireless connections on this TV, you will have — Wi-Fi (2.5Ghz) and Bluetooth.

Coming to audio, Grundig has provided 2 x 10W speakers on the TV.

As for power usage, on average, it consumes about 113.28 Watts. On standby, it uses 0.45 Watts.

For powering this unit, you'll need either a 110V or 220V outlet @ 50Hz-60Hz.

SPECSHEET

GENERAL
Brand
Grundig
Type
Smart TV
Size
55" (inches)
Model Series
N/A
Model Number
55GGU7900B
Operating System
Powered by Android TV
Launch Year
2022
DISPLAY
Panel
55" 10 bit IPS Panel
Bit Depth
10 bits (8 bits + FRC) ~1073741824 colors
Resolution
4K - 3840 x 2160 ~80 ppi
Refresh Rate
60 Hz
Response Time
N/A
Input Lag
N/A
Brightness
N/A
Backlight Source
Direct LED
Static Contrast
N/A
Dynamic Contrast
N/A
Display Coating
N/A
Color Gamut
sRGB: 90-100% (approx.)
DCI P3: N/A
NTSC 1953: N/A
Rec 2020: N/A
Adobe RGB: N/A
HARDWARE
Display Ports
3 x HDMI 2.0
Network Connectivity
  • LAN
  • Wi-Fi
  • 802.11a (IEEE 802.11a-1999)
  • 802.11b (IEEE 802.11b-1999)
  • 802.11g (IEEE 802.11g-2003)
  • 802.11n (IEEE 802.11n-2009)
  • Bluetooth
  • 1 x Ethernet RJ45
Other Ports
  • 1 x Satellite In (F-type)
  • 1 x Antenna (RF)
  • 1 x CI+ 1.3
  • 2 x USB 2.0
Audio
Speakers: 2 x 10W
Inbuilt Subwoofer: N/A
Ports: 1 x 3.5 mm Audio Out
Chipset
RAM: N/A
CPU: 4 Core CPU
GPU: N/A
Power Consumption
Average: 112.8 W
Maximum: 188.8 W
Standby: 0.45 W
Power Outlet
100 V - 120 V @ 50 Hz - 60 Hz
220 V - 240 V @ 50 Hz - 60 Hz
Energy Class
F
FEATURES AND TECHNOLOGY
Marketed Features
Screen Interpolation
Value: 1400 VPI
Technology: Video Perfection Index
Frame Rate Control
Yes
DIMENSIONS AND WEIGHT
Screen
Width: 47.62 " (inches)
Height: 26.79 " (inches)
Diagonal: 55" (inches)
Body
Width: 49.04" (inches)
Height: 29.46" (inches)
Depth: N/A
Weight: 3.7 kg
Body with Stand
Width: N/A
Height: N/A
Depth: N/A
Weight: N/A
ERGONOMICS
Viewing Angle
Horizontal: 178 °
Vertical: 178 °
Pivot Support
Left Pivot: N/A
Right Pivot: N/A
Tilt Support
Forward Tilt: N/A
Backward Tilt: N/A
Swivel Support
Left Swivel: N/A
Right Swivel: N/A
Height Adjustment
No
Vesa Mount Support
Yes
Interface: 300 x 300 mm
ENVIRONMENT LIMITS
Altitude
Storage: N/A
Operation: N/A
Temperature
Storage: N/A
Operation: N/A
Humidity
Storage: N/A
Operation: N/A

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