4K / 8K HDMI Resolution & Supported HDMI Leads

4K / 8K Resolution & Supported HDMI Leads

Currently everybody wants their HDMI leads to support 4K, which in resolutions terms is 3840 x 2160 or sometimes known as 2160p. A full 1080P image is 1920 x 1080 resolution, 4K TVs/ Monitors have about 8 million pixels which is around 4 times what your current 1080P TV/ Monitor can display.

4K is called 4K as the images are around 4000 pixels wide, this confuses things slightly as 1080 resolution is named after the image height and not the width as 4K is.

So, what about 8K? It has four times more pixels than 4K images which measure 7680 x 4320, this equates to over 33 million pixels! Essentially the more pixels, the more information which in turn means a sharper and more detailed image.

Now for the HDMI leads – we’re concentrating on version 1.4, 2.0 & 2.1. The version refers to the HDMI connector standard and not the cables itself.

HDMI 1.4 / 1.4a

  • 4K X 2K Resolution support (Supports 3840 x 2160 24Hz/ 25Hz & 30Hz & 4096 x 2160 24Hz)
  • 3D Connectivity
  • Audio Return Channel
  • Ethernet channel (Found on standard HDMI Cable with ethernet and high-speed cable with ethernet)

When to use – Perfect for any standard 1080P and 4K resolutions Up to 30Hz. *Note some CCTV NVRs now support 4k @ 60Hz *

HDMI 2.0 –

  • 4K Ultra HD @ 50/60Hz (Supports 3840 x 2160 50Hz / 60Hz)
  • Up to 32 Uncompressed digital audio channels
  • Up to 1536Hz Audio sampling
  • Simultaneous delivery of dual video streams to multi users (Same screen)
  • Simultaneous delivery of multi- stream audio to multi users (Up to four)
  • Supports 21:9 Aspect Ratio
  • Dynamic synchronisation of video and audio streams
  • Additional CEC Extension for remote controls


When to use – 4K CCTV systems which will utilise 4k @60Hz, home cinema set ups, high quality Bluray.

HDMI 2.1 –  To be released

  • 8K Ultra HD @ 50Hz / 60Hz (7680 x 4320 50Hz / 60Hz)
  • Faster refresh rates including 8K resolution video @ 60FPS & 4k @ 120FPS
  • Static HDR
  • Dynamic HDR
  • Variable refresh rate (VRR
  • Enhanced Audio Return Channel
  • Quick media switching

When to use – Home cinema & Gamers mainly but once it becomes more mainstream then everyone will be using it.

Certain aspects of the above standards will appeal to different clients, so understanding the customer expectations is what will allow you to offer the HDMI cable best suited to that customer’s needs.


For the full list of what standards support which features please see the below chart -