The version that can carry bandwidth required for transmitting 4K video.
Home theatre connections are becoming more complex and you need to be careful which one you buy. HDMI 2.0 and HDMI 2.0 b offer higher bandwidth speeds at 18gbps and 5gbps, respectively. Now this might not sound like a lot but it’s a significant increase over the previous, lower stream of 10gbps or below in versions 1-xvii old of the standard (in terms of throughput). With this increased speed will come more content types including 4K resolution video with high dynamic range color representation — HDR10 and Dolby vision versions — by standardized graphics formats such as HEVC -Hollywood’s answer to High Efficiency Video Coding, VP9 and AV1 .