Do you need an HDMI 2.1 cable for RTX 30-series GPUs?

[Windows Central]

Best answer: You don't absolutely need an HDMI 2.1 cable for NVIDIA's latest RTX 30-series GPUs. However, adding a cable using the latest HDMI standard to your setup will allow you to unlock the full potential of your hardware, especially at high resolutions and frame rates. The good news? HDMI 2.1 cables are a relatively inexpensive addition to your setup.

Full story from the WindowsCentral blog...