HDMI 2.1 vs HDMI 2.0. The major difference between HDMI 2.1 and HDMI 2.0 is the bandwidth. HDMI 2.1 has a capacity of 48 Gbps while HDMI 2.0 has a max bandwidth of 18 Gbps. As HDMI 2.1 has improved bandwidth, then it has no need to compress too much data and can provide better image quality and sound. High-Speed HDMI Cable -Supports higher resolutions besides 1080p. High-Speed HDMI Cable plus Ethernet -Capable high-resolution gaming cable with Ethernet support. HDMI with high-speed cables are capable gaming connectors. They support AMD's FreeSync technology, capable of 1080p to 10K gaming (if supported), and provide a high-speed 100Mbps Nearly nothing and many manufacturers won't distinguish at this point. Really just 3D format stuff HDMI 1.4a was released on March 4, 2010, and added two mandatory 3D formats for broadcast content, which was deferred with HDMI 1.4 pending the direction of the 3D broadcast market.[109][110] HDMI 1.4a has defined mandatory 3D formats for broadcast, game, and movie content.[109] Known popularly as mini HDMI, this new HDMI Type-C standard was designed to the same standard as HDMI Type-A. The only difference is the size of the tip. Instead of the larger Type-A tip, the mini HDMI tip is only 10.42mm wide and 2.42mm thick. This makes it a full 60 percent smaller than the standard HDMI connector. DP typically allows higher bandwitdh, so in order to get the full resolution and refresh rate, use DisplayPort, but HDMI usually isn't far behind. HDMI 2.1 addresses that and has more bandwidth, that allows 4k 120Hz or 8K 60. DisplayPort 1.4 actually has a bit less, but much more than HDMI 2.0. TVs, receivers need to have HDCP. The version changes with newer HDMI standards like 2.0 to 2.1. Without it, you will not get any videos through the cable. For HDMI 2.1, it should have HDCP 2.3 not HDCP 2.2 meant for HDMI 2.0. As benedium/techidiot mentioned, it is best to get it from reliable brands. From HDMI 1.0 to the latest HDMI 2.1, each version brought with it improvements in audio-visual quality, increased bandwidths, and support for emerging technologies like Dynamic HDR and eARC. HDMI 2.1 also brings with it a tonne of features that make gaming even smoother and improve audio. Over time HDMI 2.1 will become more and more widespread, eventually entirely eclipsing HDMI 2.0 aHMsbfq.

difference between hdmi and hdmi 2.1