HDMI 2.0 vs 2.1: What to Know Before You Buy

Weve reviewed both to help you decide whether or not its worthupgrading your HDMI cablesto the new standard.

Overall Findings

Introduced in 2013.

18Gbps transmission bit rate.

Native support for 4K/8K resolutions at 60fps/30fps, respectively.

Introduced in 2017 (the current HDMI standard).

48Gbps transmission bit rate.

Native support for 4K/8K resolutions at 120fps/60fps, respectively.

Each subsequent version gets new capabilities or an increase in bandwidth.

It means HDMI 2.1 has the most capabilities and highest bandwidth transmission rates of all HDMI versions.

Maximum transmission bit rate of 18Gbps.

Maximum transmission bit rate of 48Gbps.

Resolution output of 4K/60fps and 8K/30fps.

First HDMI version to support 4K resolution at 60fps.

Resolution output of 4K/120fps and 8K/120fps.

Supports Variable Refresh Rate (VRR) and Quick Media Switching.

The most significant practical upside to HDMI 2.1 is in its video output.

If you have a compatible TV, youll enjoy higher resolutions with faster refresh rates.

HDMI 2.1 can deliver much better video performance, including 4K resolution at 120fps and 8K at 60fps.

Additionally, HDMI 2.1 introduces a few features to complement its higher resolutions and frame rates.

At the same time, QMS (Quick Media Switching) reduces delay while switching between video sources.

Supports ARC.

Up to 32 audio channels.

While the video benefits of HDMI 2.1 are significant, its audio improvements are minimal by comparison.

Of course, youll need audio equipment that supports eARC to take advantage of it.

Can be used with PS5 and Xbox Series X up to 4K at 60fps.

Compatible TV models include SonyX90J, LG CX OLED, Samsung QN85A, and more.

As long as you have compatible devices, youll get a superior audio/video experience by making the cable switch.

No, not necessarily.

Whichever HDMI version you’re working with, ensure that you choose the suitableHDMI cable typesfor your devices.

However, you should use HDMI 2.1 cables with HDMI 2.1 devices for the best performance.