While TVs with HDMI 2.1 ports are pretty much guaranteed to have eARC support, several manufacturers have added eARC support on their devices with HDMI 2.0 as well. You can check the HDMI connectors on the back of your device, and an eARC-compatible device will typically have eARC mentioned next to a connector. As HDMI 2.1 is more widely adopted by console and hardware manufacturers, consumers are coming to expect devices with this label to be compatible with the latest and greatest features. Things like It has a higher maximum bandwidth compared to HDMI 2.1, almost tripling that of DisplayPort 1.4 at 77.73Gbps. Related: HDR Formats Compared: HDR10, Dolby Vision, HLG, and Technicolor. The trouble is, there is a distinct lack of monitors that are compatible with DisplayPort 2.0, and few affordable HDMI 2.1 monitors are available. Though HDMI 2.0 cables are compatible with HDMI 2.1 ports and will work, they will only provide 2.0 speeds and resolutions. Simply put, if you plug an HDMI 2.0 cable into a 2.1 port, you won't be Its maximum data transmission rate is 48.0 Gbit per second, or six gigabytes per second. That is more than twice the bandwidth of HDMI 2.0. Your current TV almost certainly does not support HDMI 2.1. HDMI is backwards compatible so you can use a HDMI 2.1 GPU with a HDMI 2.0 monitor and vice versa. Using a HDMI 2.0 GPU with a HDMI 2.1 monitor you will have limitations on what refresh rates etc it can support. Using a HDMI 2.1 GPU with a HDMI 2.0 monitor will give you no benefits over what it supports with a HDMI 2.0 GPU. In practice: kind of. Version HDMI 2.1b of the HDMI Specification is backward compatible with earlier versions of the Specification and is available to all HDMI 2.0 Adopters. Supporting Materials Supporting graphics, photos, and multi-language overview presentations on HDMI 2.1b are available for download and reproduction . Both the cable and HDMI 2.1 standards will be backward compatible with their previous models. For everything over 8K at 60Hz, HDMI 2.1 uses DSC (Display Stream Compression), which is an effective form of data rate compression without any impact on the image quality. It increases latency, but the added delay is imperceptible (below 1ms). HDMI 2.1 es compatible con todos los formatos HDR actuales, tanto estáticos como dinámicos: HDR10, HDR10+, HDR dinámico, Dolby Vision, HLG, etc. Comprar un PC gaming: guía, consejos y todo lo The soundbar passes the ATV HDR and 4:2:2 Chroma output to the TV with no problem, but the only way for Dolby Atmos sound to work is via an HDMI 2.1 cable from the ATV to the soundbar. So, a good reason to get HDMI 2.1 cables, as implied by martyholt, is for Dolby Atmos sound (if you have a compatible sound system) if you want it. 3kkzGm.