How to Choose the Right HDMI Cable: Complete Buying Guide

Introduction

Choosing an HDMI cable can be confusing because packaging often highlights terms such as 4K, 8K, 120Hz, High Speed, Ultra High Speed, ARC and eARC. However, you don't necessarily need the most expensive or highest-specification cable for every TV or device. The right choice depends on what you are connecting, the resolution and refresh rate you want to use, the audio features you need and the cable length required. This guide explains the practical differences so you can choose an HDMI cable that actually matches your setup.

Does the HDMI Cable Version Actually Matter?

Yes, but the capabilities supported by the cable matter more than simply looking at a version number. HDMI technology has evolved over time, allowing newer equipment to support higher resolutions, faster refresh rates and more advanced audio and gaming features.

For example, a basic setup involving a Full HD TV and a set-top box does not require the same bandwidth as a gaming setup running 4K at 120Hz. Similarly, a soundbar using eARC has different requirements from a simple device sending stereo audio to a television.

This is why choosing an HDMI cable should start with the devices and features you want to use rather than automatically buying the newest or most expensive cable available.

HDMI 1.4 vs HDMI 2.0 vs HDMI 2.1

Your previous article covers the detailed comparison between HDMI 2.0 and HDMI 2.1, so this guide won't repeat that comparison. Instead, it is useful to understand what the different generations mean when you're deciding which cable is appropriate for your setup.

HDMI 1.4

HDMI 1.4 introduced support for features such as 4K video at lower refresh rates and is still sufficient for many older Full HD and basic 4K applications. If your equipment does not require high refresh rates or newer gaming features, you may not need a newer cable simply because one is available.

HDMI 2.0

HDMI 2.0 increased available bandwidth and made features such as 4K at higher refresh rates more practical. It can be suitable for many 4K televisions, streaming devices, computers and home entertainment systems.

HDMI 2.1

HDMI 2.1 supports significantly higher bandwidth and enables features such as 4K at 120Hz and 8K at suitable settings. It is particularly relevant for newer gaming consoles, high-end gaming PCs and displays designed to take advantage of these capabilities.

The important point is that buying an HDMI 2.1-capable cable does not automatically make an older TV or source device capable of HDMI 2.1 features. The source, display and cable all need to support the feature you want to use.

Do You Need an HDMI 2.1 Cable for a 4K TV?

Not necessarily. A 4K television can work perfectly well with a suitable HDMI cable that supports the bandwidth required by your particular source and settings.

For example, if you mainly watch streaming services or use a set-top box at 4K with a standard refresh rate, you may not need the higher bandwidth associated with HDMI 2.1. However, if you have a 4K TV capable of 120Hz and want to use that capability with a compatible gaming console or PC, a suitable Ultra High Speed HDMI cable becomes much more relevant.

The question is therefore not simply "Is my TV 4K?" but "What resolution and refresh rate do I want to run?"

4K at 60Hz vs 4K at 120Hz

This distinction is particularly important for gamers and PC users. Both are 4K resolutions, but 120Hz requires substantially more video bandwidth than 60Hz.

A 4K 60Hz setup can be suitable for televisions, streaming devices, movies and general home entertainment. A 4K 120Hz setup is more demanding and is commonly sought by gamers who want smoother motion and faster response on compatible displays.

If your TV, gaming console or PC supports 4K at 120Hz, make sure the HDMI port and cable are also capable of supporting the required bandwidth. Simply seeing "4K" printed on an HDMI cable does not necessarily tell you whether it supports 4K at 120Hz.

What HDMI Cable Do You Need for PS5 or Xbox?

If you're buying an HDMI cable for a PS5 or Xbox Series X|S, the cable specification becomes more important because these consoles can support demanding combinations of resolution and refresh rate. If your TV or monitor supports 4K at 120Hz, you need a cable capable of carrying the required bandwidth to take advantage of it.

For a basic 4K 60Hz setup, the requirements are lower. But if you're specifically buying a cable for a gaming console and want to use features such as 4K 120Hz, Variable Refresh Rate (VRR) or other HDMI 2.1 features, choosing a suitable Ultra High Speed HDMI cable is the safer option.

What About Older Consoles?

Older consoles may not require the bandwidth of newer systems. If your console and display are limited to lower resolutions or refresh rates, buying the newest HDMI cable available may not provide any visible benefit.

The cable should be selected according to the capabilities of both the console and the display, not simply the age or price of the cable.

HDMI ARC vs eARC: Does Your Cable Matter?

ARC and eARC allow compatible televisions to send audio from the TV back to a soundbar or AV receiver through the HDMI connection. This can reduce the number of separate cables required for your home entertainment setup.

ARC (Audio Return Channel) is available on many modern TVs and can handle common surround-sound formats. eARC (Enhanced Audio Return Channel) provides substantially greater audio bandwidth and supports more advanced audio formats.

If your TV and soundbar both support eARC, make sure you're using compatible HDMI connections and a cable suitable for the required feature. Also check that you're connecting the devices to the HDMI ports specifically labelled ARC or eARC.

What HDMI Cable Do You Need for a Soundbar?

For a soundbar, the important question isn't simply whether the cable supports 4K or 8K. You also need to consider whether you're using ARC or eARC to send audio from the television to the soundbar.

If your TV and soundbar use standard ARC, a suitable High Speed HDMI cable may be sufficient for the supported audio formats. For an eARC setup, choose a cable that supports the required HDMI features and bandwidth.

Also remember that the cable cannot create eARC functionality if either the television or soundbar does not support it. The TV, soundbar, HDMI ports and cable all need to work together.

Does HDMI Cable Length Affect Performance?

Yes. Cable length can become increasingly important as bandwidth requirements increase. A short HDMI cable carrying a high-bandwidth signal may work perfectly, while a much longer cable can be more sensitive to signal loss or connection problems.

This is particularly relevant for demanding applications such as 4K 120Hz and 8K. If you only need a short connection between a TV and a nearby set-top box, console or soundbar, a standard-quality cable of appropriate specification is usually straightforward.

For longer installations, especially when routing HDMI through walls, ceilings or across a room, pay closer attention to the cable's specified length and capabilities rather than simply buying the cheapest long cable available.

Do Expensive HDMI Cables Give Better Picture Quality?

Not necessarily. HDMI is a digital connection, so a compatible cable generally delivers the intended signal without gradually making the picture "better" as the cable price increases.

A more expensive cable can be worthwhile if it offers higher bandwidth, better construction, longer-distance performance or verified specifications that your setup actually requires. But paying a premium simply because a cable has gold-plated connectors, luxury packaging or claims of "better picture quality" does not automatically mean you'll see a better image.

For most everyday installations, the goal should be to buy a properly specified, reliable HDMI cable, not the most expensive one on the shelf.

Gold-Plated HDMI Connectors — Do They Make a Difference?

Gold-plated HDMI connectors are often marketed as a premium feature, but they should not be the main reason you choose one cable over another. Gold plating can provide good resistance to corrosion and can help maintain reliable contact over time, particularly in connectors that are frequently plugged and unplugged.

However, gold-plated connectors do not automatically improve picture quality, increase resolution or make a cable support 8K. The cable's overall construction and supported bandwidth are much more important when choosing an HDMI cable.

If two cables have the same required specifications, choosing one with well-made, corrosion-resistant connectors can be a reasonable preference, but there is no need to pay a large premium simply for the word "gold."

High Speed, Premium High Speed and Ultra High Speed — What Do They Mean?

The labels printed on HDMI cable packaging can be more useful than simply looking for an HDMI version number.

High Speed HDMI Cable

High Speed HDMI cables are designed for earlier high-bandwidth HDMI applications and can support common Full HD and some 4K requirements depending on the specific setup.

Premium High Speed HDMI Cable

Premium High Speed certification is associated with cables designed for higher-bandwidth applications such as 4K at 60Hz. Certified cables also go through testing intended to verify their performance against the relevant specifications.

Ultra High Speed HDMI Cable

Ultra High Speed HDMI cables are designed for the higher bandwidth requirements associated with HDMI 2.1 features, including applications such as 4K at 120Hz and 8K at suitable settings.

If you're buying a cable specifically for a modern gaming setup, 4K 120Hz TV or other HDMI 2.1 application, Ultra High Speed is the label to look for rather than relying only on generic terms such as "8K cable."

Can an Old HDMI Cable Work With a New TV?

Yes, an older HDMI cable can work with a newer TV as long as it supports the particular signal you're trying to send.

For example, an older cable may work perfectly well when connecting a set-top box to a modern 4K television for a lower-bandwidth signal. However, the same cable may not support the higher bandwidth required for 4K at 120Hz or certain HDMI 2.1 features.

So you don't necessarily need to replace every HDMI cable when you buy a new TV. Replace the cable when your desired resolution, refresh rate or feature requires capabilities that the existing cable cannot reliably provide.

Why Does My 4K TV Sometimes Show Only 30Hz?

If your TV is capable of 4K 60Hz but the connected device is outputting only 30Hz, the cable may be one possible cause, but it isn't the only one.

Check the following:

• HDMI cable capability

• HDMI port being used on the TV

• HDMI output settings on the source device

• Whether the source device actually supports 4K 60Hz

• TV settings that enable enhanced or high-bandwidth HDMI modes

Some televisions have different capabilities across their HDMI ports, so connecting the device to a different port may also change what resolutions and refresh rates are available.

Don't immediately assume that the cable is faulty. The source device, TV settings, HDMI port and cable all need to support the desired signal.

What HDMI Cable Do You Need for a Projector?

The right cable for a projector depends on its resolution, refresh rate, distance from the source and the features you want to use.

A basic Full HD projector has very different requirements from a modern 4K projector capable of high refresh rates. Cable length also becomes especially important when the projector is ceiling-mounted or installed far from the source device.

For a short connection, a suitable passive HDMI cable may be sufficient. For longer installations, check the manufacturer's recommendations and choose a cable specifically designed to maintain the required signal over that distance.

Active vs Passive HDMI Cables for Long Distances

A passive HDMI cable relies on the source device to send the signal through the cable without additional signal processing. This is generally suitable for shorter connections.

An active HDMI cable incorporates technology designed to help transmit the signal over longer distances. These cables can be useful when the source and display are far apart, but compatibility and installation requirements should be checked before buying.

For particularly long installations, don't simply choose the longest passive cable available. Consider the required resolution, refresh rate, cable construction and the manufacturer's specified maximum distance.

Does a More Expensive HDMI Cable Last Longer?

Price alone does not determine how long an HDMI cable will last. A well-built cable with good connectors, proper strain relief and suitable insulation can remain reliable for years, while an expensive cable with poor construction may not offer the same durability.

If the cable will be connected and disconnected frequently, look for solid connector construction and good strain relief where the cable meets the HDMI plug. For a permanently installed TV or home theatre setup, cable flexibility and appropriate length may be more important than premium packaging.

The best approach is to pay for the specifications and construction you actually need, rather than assuming a higher price automatically means better performance.

Does HDMI Cable Quality Matter for Gaming?

Yes, but the important factor is whether the cable can reliably support the signal your gaming setup is trying to send. A basic gaming setup at 1080p does not have the same requirements as a PS5, Xbox Series X or gaming PC running 4K at 120Hz.

If you're using a high-refresh-rate gaming display, check the capabilities of the console or PC, the display's HDMI port and the cable. For a 4K 120Hz setup, an appropriate Ultra High Speed HDMI cable is generally the sensible choice.

Features such as VRR, HDR and high refresh rates can also depend on the capabilities of the complete HDMI connection. A cable cannot add a feature that the source or display doesn't support.

Do You Need a Special HDMI Cable for HDR?

HDR itself does not mean you need a particular expensive HDMI cable. What matters is whether the cable can carry the resolution, refresh rate, colour and bandwidth requirements of the HDR signal being used.

For example, a 4K HDR signal at 60Hz has different requirements from a 4K HDR signal at 120Hz. If your equipment supports a demanding combination of resolution and refresh rate, choose a cable with sufficient bandwidth rather than choosing based on the word "HDR" printed on the packaging.

Does HDMI Cable Thickness Mean Better Quality?

Not necessarily. A thicker HDMI cable may contain larger conductors, additional shielding or stronger outer insulation, but thickness by itself does not guarantee better performance.

For everyday use, focus on the cable's stated specifications, construction quality and appropriate length. A cable that is unnecessarily thick can also be harder to route behind a TV or through a cable-management system.

A good HDMI cable should provide the required performance while remaining practical to install.

Can You Run an HDMI Cable Through a Wall?

Yes, but an in-wall installation needs more consideration than simply choosing a cable of the correct length. The cable should be suitable for the installation environment and should provide the required HDMI performance over the distance.

Before installing it permanently, test the complete setup at the required resolution and refresh rate. This is particularly important for 4K 120Hz or 8K installations, where replacing a cable after the wall has been closed can be inconvenient.

For long or concealed installations, consider the manufacturer's installation recommendations and whether an active or other long-distance solution is more appropriate.

Common HDMI Cable Buying Mistakes

Buying the Most Expensive Cable

A higher price does not automatically provide a better picture. Buy according to the bandwidth and features your equipment actually requires.

Choosing Only by the "8K" Label

An "8K" label alone doesn't tell you everything about the cable's performance. Check the actual speed or certification and make sure it suits your resolution and refresh-rate requirements.

Ignoring the HDMI Ports

Your TV may have several HDMI ports with different capabilities. Check which port supports the feature you want to use, particularly for 4K 120Hz, eARC or other advanced functions.

Buying an Unnecessarily Long Cable

Extra length can make installation easier, but longer high-bandwidth connections can be more demanding. Choose a length that comfortably reaches the devices without unnecessary excess.

Assuming Every HDMI Cable Supports 4K 120Hz

Seeing "4K" on the packaging does not automatically mean the cable supports 4K at 120Hz. Check the cable's specified capabilities before buying.

How to Choose the Right HDMI Cable for Your Setup

The easiest way to choose is to start with the highest-demand device in your setup.

For a standard TV and set-top box, you may only need a cable suitable for the resolution and refresh rate being used. For a 4K TV with a gaming console running at 120Hz, you'll need a significantly higher-bandwidth connection.

For a TV and soundbar, check whether you're using ARC or eARC. For a projector, consider both the required signal and the distance. For long installations, pay particular attention to cable length and signal reliability.

In short, choose the cable based on what you need it to carry, not simply what is printed in the largest font on the packaging.

Conclusion

Choosing the right HDMI cable doesn't mean buying the most expensive option or automatically choosing the newest specification. The right cable depends on your TV or display, source device, resolution, refresh rate, audio requirements and cable length.

For everyday TV and set-top box use, a suitable standard HDMI cable may be all you need. For 4K 120Hz gaming, eARC, 8K or other high-bandwidth applications, choosing a properly specified cable becomes much more important.

Before buying, check the capabilities of your TV, source device and HDMI port, then choose a cable that supports the highest performance you actually plan to use. This approach gives you the right performance without paying extra for features your setup cannot use.

Looking for the right HDMI cable? Explore our range of HDMI cables for TVs, gaming, soundbars, projectors and other devices featured below.

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