First, check the HDMI cable. You should use an 'Ultra High Speed' cable like the one in the PS5 box. If you are passing the HDMI signal through a receiver/soundbar, the intermediate device must support HDMI 2.1 passthrough (for 4K120). Few devices do so the alternative is to connect PS5's HDMI directly to the TV, and pass audio back to the
HDMI 2.1 is strictly required for high end gaming — e.g. PS5 or Xbox Series X. For watching stuff, older standards are just fine. No need to buy Ultra high-speed cable, unless you wish to future proof. Use any of the TV's output ports; ATV 4K (any) does not support over 18 gigabits/second of data, at this point. Look for a cheaper option on Amazon, even if you are just looking to future proof your set up when you get the PS5 and a HDMI 2.1 capable display. The cable that comes with the Pro is sufficient and the 8K cable will not make a difference in your game play. The PS5 will also come with a capable HBMI 2.1 cable, so save your money.
Monoprice 8K Certified Braided Ultra High-Speed HDMI 2.1 Cable. Best HDMI 2.1 Cable. $13 $19 Save $6. If you want to add an HDMI 2.1 cable to your arsenal, this 8K Certified model from Monoprice is a terrific pick.
People need to understand this as to not buy these monitors thinking they are 40Gbps+ HDMI 2.1 bandwidth ports. Gigabyte is lame. No it's not. An HDMI 2.1 connection essentially allows for 120fps at 4K, or 8K at 60fps, while an HDMI 2.0 connection can allow for 120fps, but at either 1080p or 1440p.
Well, at CES 2022, a new version of HDMI is going to be introduced, bringing with it one major HDR feature. According to The Verge, HDMI 2.1a will be introduced at CES 2022. This new standard is
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difference between hdmi 2.0 and 2.1 ps5