HDMI 2.1 also added several new features to further improve the revision update, including built-in variable refresh rate (VRR), Auto Low Latency Mode, Display Stream Compression 1.2a, and more. Maximum bandwidth in the HDMI 2.0 specification is 18Gbps. But, TMDS is still supported on HDMI 2.1 as a backward compatibility feature. This technology is different from the older TMDS (Transition Minimised Differential Signalling) used on older HDMI interfaces, which cannot support anything close to the HDMI 2.1 requirements. Version 2.0 of the HDMI Specification, which is backward compatible with earlier versions of the Specification, was developed by the HDMI Forums Technical Working Group whose members represent some of the worlds leading manufacturers of consumer electronics, personal computers, mobile devices, cables and components. Does HDMI 2. It significantly increases bandwidth up to 18 Gbps and adds key enhancements to support emerging requirements such as higher resolutions and delivery of multiple streams.
Hdmi 2.0 bandwidth update#
According to, that was a necessity achieve higher uncompressed resolutions beyond 4k 60Hz, and it allowed HDMI 2.1 to reach the required 48Gbps of bandwidth to deliver those higher resolutions. HDMI 2.0 is an update to earlier versions. The higher resolution support was achievable thanks to HDMI 2.1's use of Fixed Rate Link signaling. This allows HDMI 2.1 to push resolutions of up to 10k and support high refresh rate 120Hz displays at 4k resolutions without the need for display stream compression (DSC), a lossy algorithm to reduce bandwidth requirements.
Hdmi 2.0 bandwidth upgrade#
The biggest selling point to HDMI 2.1 was its bandwidth upgrade from 18Gbps on HDMI 2.0b to a whopping 48Gbps with HDMI 2.1. HDMI discussion just became a lot more difficult.īefore this news dropped, HDMI 2.1 was originally a full-on upgrade over HDMI 2.0b in terms of resolution and raw bandwidth, with some extra features tacked on. We don't know the official reasoning behind this major name change, but it seems like it will foster confusion and create problems for consumers going forward.
According to a report from TFT Central, HDMI 2.0 is being dropped as an official name altogether and will be replaced by HDMI 2.1. If you thought the naming scheme for USB ports was confusing, get ready to see the same thing happen to HDMI. The HDMI Forum has announced the release of HDMI 2.0 at IFA 2013, which ups the specifications bandwidth to 18 Gbps (from 10.2 Gbps in HDMI 1.4) and adds a range of new features designed for.
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