HDMI 2.1 is also on both of the next-generation game consoles, the PlayStation 5 and Xbox Series X. In fact, to get the most out of those consoles you'll want a TV that supports at least some HDMI ...

DisplayPort 2.1 goes up to 77.37Gbps (theoretical bandwidth is higher, in case you see different numbers, but this is the actual data rate possible across the cable).

HDMI 2.1 also supports color depths up to 16 bits, though humans can hardly distinguish 281 trillion shades. HDR that’s even better than Dolby Vision ...

DisplayPort 2.1 cables operating at the spec's max capability of 80Gbps, meanwhile, are specified to operate at full performance at distances "beyond" 3.3 feet (1 m), VESA announced today.