Does HDMI support 240hz?

HDMI is the most flexible display connector in most modern displays that you can find. It is integrated into all modern TVs, displays, and graphics cards — although not all are as efficient. So, you might ask: does HDMI support 240hz?

Yes! HDMI supports 240Hz, specifically HDMI v2.0 and HDMI v2.1. In fact, both of these cables are built to handle 1080 pixels @ 240Hz.

In this article, let us get to know deeper the capabilities of HDMI cables: Does HDMI support 4K 240Hz? Can HDMI 2.1 do 1080p 240Hz? What cable is best for 240Hz?

This is HDMI 2.1 cable that supports 240Hz: Infinnet 8K HDMI 2.1 Cable, Ultra High-Speed HDMI Cable 4K HD 120Hz 144Hz 2K 240Hz Gaming

Does HDMI support 240hz?

HDMI ports are used to transmit digital data. And, because the demands placed on digital data have increased at a considerably faster rate than they did in the analog era, HDMI connections and cables must evolve as well.

HDMI has had to adapt so swiftly that many generations of HDMI ports are already playing a critical role in today’s AV industry.

Indeed, a single product may support various generations of HDMI.

The primary HDMI generations to consider if you’re in the market for a new AV product right now are v2.0 and v2.1, and both of these support 240Hz.

Let’s consider each HDMI cable.

HDMI v2.0

The HDMI v2.0 specification adds significantly additional bandwidth – primarily to support 4K video.

Its 18.0 gigabits per second throughput supports 4K video at frame rates up to 60 frames per second, and also dynamic range video up to the wide ‘Rec 2020’ color space with 10/12-bit color resolution.

HDMI cable
HDMI cable

HDMI 2.0 also introduces support for up to 32 audio channels at a high sample rate of 1536kHz and up to 4 simultaneous audio signals and two simultaneous video streams.

Additionally, HDMI 2.0b includes support for the new Hybrid Log-Gamma format, which is already being utilized by the BBC and is expected to be adopted by other broadcasters soon.

HDMI v2.1

The v2.1 HDMI specification was officially launched on November 28, 2017.

It represents the single most significant advancement in HDMI technology to date. It significantly increased 48Gbps higher data rate, enabling outstanding sound and picture quality, along with highly innovative features.

However, it also became the most challenging HDMI generation, thanks to a mix of displays ‘running ahead’ with some 2.1 capabilities and some claims before they were completely validated.

HDMI 2.1 now allows video resolutions up to 10K at reduced fps (even 8K at 60Hz), clearing the way for the next generations of 8K-resolution televisions.

Read more: Amazon Basics 48Gbps High-Speed 8K HDMI 2.1 Cable

Does HDMI support 4K 240Hz?

HDMI 2.1 is now available, bringing amazing bandwidth and a slew of additional features, including support for 4K at 240Hz with DSC.

While the new standard will have no immediate effect on the average user today or in the near future, new gear coming to market over the next year and into the next decade will bring improved experiences with movies, games, and virtual reality.

The most noticeable benefit that HDMI 2.1 brings is more bandwidth.

We’re talking about a whopping 48 gigabits per second, compared to the 18Gbps supported by HDMI 2.0.

This bandwidth boost enables the higher resolutions shown throughout the remainder of this story: 8K and 10K video resolutions, 4K resolution with a 240Hz refresh rate, and so on.

You’ll need a new cable, but that’s a tiny price to pay for the experience.

Can HDMI 2.1 do 1080p 240Hz?

HDMI 2.1 can support 1080p at 240Hz. Essentially, HDMI 2.1 doubles the bandwidth that HDMI 2.0 supports.

2.1-standard connections will easily exceed the 4K limit, transmitting a maximum of 10K content at 120 frames per second down the pipe.

All those additional pixels – six times that of standard 4K video – require significantly more bandwidth to transmit the data.

HDMI 2.1 cables can handle the task, with a maximum data transfer rate of 48Gbps rather than 18Gbps.

Related Questions

1. What cable is best for 240Hz?

The best cable for 240Hz is HDMI v2.1.

2. Can HDMI 2.0 B do 240Hz?

HDMI 2.0a adds HDR (High Dynamic Range) support, while HDMI 2.0b adds support for the enhanced HDR10 format and the HLG standard. Thus, HDMI 2.0b is compatible with 1080p/240Hz.

3. Is there an HDMI cable for every standard?

No, there are no HDMI cable for every standard.

There are only three classifications you need to be familiar with: Standard, Highspeed, and Premium.

  • Standard HDMI Cable – is ideal for high-resolution output values like Sky HD 1080i 50 Hz 8-bit 4:4:4 video.
  • High-Speed HDMI Cable – is expected to transmit video at a rate of 3G 10.2 Gbps or resolutions up to 4K UHD 60 Hz 8-bit 4:4:4. However, you must keep cable distances under 7m when supplying these types of resolutions.
  • Premium HDMI Cable – features superior materials, enhanced wire management with how each set is twisted and soldered, and additional shielding to reduce Electro-Magnetic Interference.


In this article, we have concluded that HDMI cables can support 240Hz, particularly HDMI v2.0 and HDMI v2.1.

Various HDMI cables are capable of carrying varying quantities of data. Therefore, purchasing the cheapest HDMI cable available may not provide you with all the features you desire.

For example, if an HDMI cable cannot transmit data at a rate of at least 40Gbps, it will be unable to support 4K at 240Hz or 1080p at 240Hz.

To assist you in purchasing an HDMI cable, has created three HDMI ‘standards’ that you should check for while shopping.


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  4. HDMI 2.1 specs and features: Everything you need to know”, TechHive