The 8K (UHD-2) resolution

Not so long ago, the resolution 4K (UHD = Ultra High Definition) was considered the standard. And although 4K content and 4K technology have not really arrived "in the masses" yet, the successor 8K has already appeared on the horizon. In the following you will find interesting facts about the 8K resolution:

Different resolutions compared, simplified view

What exactly is 8K?

8K describes UHD-2 and is the successor of 4K (UHD). The 8K resolution has about 8,000 columns horizontally. Or 7,680 x 4,320 pixels, distributed over the respective display size in the classic 16:9 format, which is four times more pixels than with 4K and 16 times as many pixels as with Full HD.

This means that there are approximately 33.2 million pixels on the display = 33.2 megapixels. Sometimes also 8,192 x 4,320 pixels at approximately 17:9 are called 8K. However, with the rather unusual page format, this resolution is hardly relevant for consumer electronics.

Where does 8K make sense today?

New 8K cables and adapters are already a good idea, and not just for technical early adopters. The price difference to 4K products is not great, and 8K products are backwards compatible. Home cinema and gaming enthusiasts who use expansive screens can already benefit from 8K. Also interesting for gamers: In 2020, the new Xbox and Playstation will be launched, both are 8K compatible and support 8K streaming.

Not only at concerts or on house walls: Large screens are great

In addition to the private sector, there are other areas of application. We would like to mention science, research and design as well as museums, art and culture. Large-scale presentations with projectors or LED walls, for example to show models or simulations or even artistic animations or installations, gain from 8K. The improved level of detail and the increased colour brilliance are a clear advantage for the viewer.

Can you see a difference between 4K and 8K?

This question cannot (yet) be answered in general terms. Distinctness depends not only on the viewing distance and the size of the 8K screen, but also on other details such as the hardware and individual eyesight.

Simplified and in general, the greater the viewing distance, the fewer pixels per inch are required to ensure that what is seen does not appear "pixelated". For example, a smartphone, which is usually brought closer to the eye, requires a higher pixel density than a television set at home.

At 8K the pixels are closer together and smaller, which can be perceived as a gain in image quality in terms of level of detail and depth. Colours can also appear more vivid thanks to 12 bit colour depth. The perception of increased color brilliance and greater detail can vary from viewer to viewer.

Schematic view of the subpixel structures of Full-HD, 4K and 8K
Schematic view of the subpixel structures of Full-HD, 4K and 8K

An illustration of the increased accuracy from Full HD to 8K is shown in the schematic view above. It shows the respective subpixel structure of different resolutions with the same section in each case. In Full HD, a subpixel is relatively large, you see 4 x 4 = 16 pixels. The quadruple number of pixels is given with 4K: 8 x 8 = 64 pixels. With 8K the number of pixels is quadrupled again: 16 x 16 = 256 pixels.

How can 8K content be transferred?

The transfer of the 8K data, which is rather complex in terms of quantity, is demanding. Only HDMI from version 2.1 on offers enough bandwidth to transfer 8K at a image refresh rate of 60Hz.

Also, only this version supports 14 and 16 bit color depth as well as 4K 3D 50/60p, which the predecessor HDMI 2.0 could not do. Generally, HDMI 2.0 "only" manages 4K. DisplayPort supports 8K from version 1.3.

8K in everyday life?

8K-compatible devices, e.g. televisions, are still very cost-intensive and media content in 8K is hardly available. Already 4K content is currently only supported by a few TV stations. There are many movies available as UHD Blu-Ray, but the necessary playback devices are not yet widely available.

So 8K content and playback devices are even rarer, and it will take years before they can spread throughout the country (as of the end of 2019). "First the technology, then the hardware and content" is however programmatic and can also be observed with 4K.

8K product examples by Delock

NEW DisplayPort 1.4 Repeater

Can be used for signal enhancement of a DisplayPort connection up to 12 m. An up to 2 m long cable can be connected from a PC or laptop to the repeater input port. A cable up to 10 m long is then routed to a display or TV at the repeater output port.

     1 x DisplayPort female
     1 x DC 5 V power connector
     1 x DisplayPort female
Supports HBR3 (8.1 Gbps) data rate
Cascadable (Daisy Chain)
Dimensions (LxWxH): ca. 55 x 54 x 20 mm

DisplayPort 1.4 Cable

This 8K certified cable is used to connect e.g. monitors, beamers or TV sets, to a PC or notebook. By supporting a maximum bandwidth of 32.4 Gb/s, content can be displayed in 8K, 5K and 4K. The high quality cable is triple shielded and significantly improves the quality of audio transmissions due to the sampling rate of up to 1536 kHz.

     1 x DisplayPort male to
     1 x DisplayPort male
Supports Display Stream Compression 1.2
Supports HDR, HDCP 1.4 and 2.2
Up to 1536 kHz audio sampling rate
Length incl. connectors: ca. 2 m

Also available with
Length 1 m - Item 85658
Length 3 m - Item 85661
Length 5 m - Item 85663

DisplayPort 1.4 Adapter male to female 90° left angled

With this adapter the DisplayPort jack of a device can be angled by 90°. This makes it easier to connect a cable in places that are difficult to reach.

     1 x DisplayPort male to
     1 x DisplayPort female
Supports HDR, HDCP 1.4 and 2.2
Supports Display Stream Compression 1.2 (DSC)
Dimensions (LxWxH): ca. 30.3 x 31.6 x 12 mm

Also available as
Adapter 90° right angled - Item 66297

All 8K products by Delock