The difference between HDMI 2.1, 2.0 and 1.4

HDMI 1.4 version

HDMI 1.4 version, as an earlier standard, is already capable of supporting 4K resolution content. However, due to its bandwidth limitation of 10.2Gbps, it can only achieve a resolution of up to 3840 × 2160 pixels and display at a refresh rate of 30Hz. HDMI 1.4 is typically used to support 2560 x 1600@75Hz and 1920 × 1080@144Hz Unfortunately, it does not support 21:9 ultra wide video format or 3D stereoscopic content.

HDMI 2.0 version

The HDMI 2.0 version extends the bandwidth to 18Gbps and can achieve a 50/60Hz image refresh rate in 4K image transmission, making playback vivid and smooth, with ideal video effects, no lag, and softer for the human eye. At the same time, it supports up to 32 audio channels and a sampling rate of up to 1536kHz, providing users with a more stunning auditory experience. Not only that, it also provides backward compatibility. In other words, HDMI 2.0 version can be used as HDMI 1.4 version, but HDMI 1.4 version cannot replace HDMI 2.0 version. HDMI 2.0 is an upgraded version of HDMI 1.4, which means it has more powerful features.

In terms of color saturation, HDMI 2.0 supports 10 bit color depth. Version 2.0 has a better sense of color hierarchy and a more delicate and rich image compared to version 1.4.

HDMI 2.1 version

HDMI 2.1 is currently the latest HDMI standard, which has made revolutionary improvements based on the previous two versions. HDMI 2.1 has a bandwidth of up to 48Gbps and can support 8K@60Hz,even video transmission with 10K resolution. More importantly, HDMI 2.1 introduces dynamic HDR technology, which can provide the best depth, brightness, contrast, and color breadth for each frame, bringing users an unprecedented visual experience. This version also includes Variable Refresh Rate (VRR) and Automatic Low Latency Mode (ALLM), greatly enhancing the gaming experience. Importantly, HDMI 2.1 is backward compatible with HDMI 2.0 and HDMI 1.4 versions, ensuring broad device compatibility.