In early 2017, a new HDMI standard was adopted, which received the designation HDMI 2.1
The main differences from previous standards stated by the developers:
- Support for video with a frame rate of 120 per second (120Hz) and a resolution of 4K, 5K, 8K, 10K.
Previously, the standard 2.0 supported a resolution of 4K and a frame rate of 60Hz.
- support dynamic range HDR
In the previous version there was already support for HDR
- Increase the transmission speed to 48Gb / s, which allows you to transfer video to 10K or 8K video with HDR support.
The transfer speed is increased 18Gb / s to 48Gb / s, but this requires a new cable, provides backward compatibility, which means the cable can be used in standards 2.0 and 1.4. In turn, this means that the pinout of the cable has not been changed.
The increase in throughput will be due to the use of new signal transmission protocols and possibly improve the quality of HDMI cables.
- Support for VRR game mode.
Previously, HDMI ports were adapted to a frequency of 30 or 60Hz, which means that if the video card produced 46 frames per second, then the image frequency of the image transferred to the monitor was automatically increased to 60 frames, due to the repetition of frames, which did not always provide the proper picture quality. To synchronize the monitor and video card G-Sync and FreeSync technologies were used, these technologies had to support the video card and monitor.
Support for VRR mode will provide the ability to synchronize the frequency of the video card and TV (monitor), regardless of the type of monitor and video card and provide the ability to display images with a floating frequency.