There are different versions of the HDMI standard and they all require a different cable even though they all look the same. Cable that is used in the setup directly controls the max resolution that can be outputted by the TV or the monitor.
In this article we will go over how you can determine the version of the HDMI cable and we will review the best HDMI 2.1 cables for 4K resolution with high refresh rate and 8K resolution.
Short answer is that, the HDMI 2.0 version doesn't have enough data bandwidth for 4K @ 120Hz refresh rate or 8K resolution with 60Hz.
If you are looking to connect your next-gen gaming console, or looking for 8K resolution for your entertainment setup, you need a HDMI 2.1 cable.
HDMI 2.1 cable has 48Gbps bandwidth which is very similar to the internet connection, If you don't have this bandwidth, no matter what your TV or video device is you can't get this kind of resolution.
In addition to the high resolution that the new HDMI 2.1 cable brings, It also includes brand new features that weren't available before.
Here are some of the major features provided by the HDMI 2.1 cables and devices: