CES 2017: HDMI 2.1 is unveiled with better support of 4K and 8K!

The HDMI 2.1 standard has been introduced at the CES 2017, several changes are taking place. More bandwidth for the 4K HDR and a variable refresh technique.



At the CES 2017, the HDMI forum announced the HDMI 2,1. The standard brings a very high flow rate. This should allow the transmission of more information about color encoding. We can also talk about a variable refresh rate, like Nvidia G-Sync, AMD FreeSync, or the Qualcomm  Q-Sync in the Snapdragon 835.

-Game Mode VRR :

The first feature brought by HDMI 2.1 offers a variable refresh rate. as in the case of G-Sync it is necessary to modify the refresh rate of the screen (expressed in Hz) in order to adjust to the frame rate of the GPU (expressed in FPS). This has the effect of keeping a fluid gaming experience without tearing or stuttering and even without forcing the GPU to reach 60 FPS all the time.

This kind of technology, already available on PC, used the DisplayPort connector. The HDMI is more used by the manufacturers of televisions. we hope that this will bring a much more fluid gaming experience on our TVs.
-48 Gbps of bandwidth:


One of the major new features of this new version is the increase in bandwidth. From the 18 Gbps of HDMI 2.0, the new version nearly tripled the supported rate with 48 Gbps, as shown below.
Of course, more bandwidth itself is not very interesting. This is why the HDMI Forum has announced two innovations going with this new standard: the Dynamic HDR, as well as a technique allowing to offer a variable refresh rate on a television.

In general here is all the features of the HDMI 2.1:

·         Higher Video Resolutions support a range of higher resolutions and faster refresh rates including 8K60Hz and 4K120Hz for immersive viewing and smooth fast-action detail.
·         Dynamic HDR ensures every moment of a video is displayed at its ideal values for depth, detail, brightness, contrast, and wider color gamuts—on a scene-by-scene or even a frame-by-frame basis.
·         48G cables enable up to 48Gbps bandwidth for uncompressed HDMI 2.1 feature support including 8K video with HDR. The cable is backwards compatible with earlier versions of the HDMI Specification and can be used with existing HDMI devices.
·         eARC supports the most advanced audio formats such as object-based audio, and enables advanced audio signal control capabilities including device auto-detect.

·         Game Mode VRR features variable refresh rate, which enables a 3D graphics processor to display the image at the moment it is rendered for more fluid and better detailed gameplay, and for reducing or eliminating lag, stutter, and frame tearing.

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