Quick answer: Cables do not have HDMI versions, they have bandwidth ratings. The current top tier is Ultra High Speed, certified for 48 Gbps, which covers 4K120 and 8K60 with compression off. The version number people quote, HDMI 2.1 or 2.1b, describes what the ports can do. A cable sold as version 2.1 without a certification label proves nothing.
Search results for the latest HDMI version are full of number chasing. The useful question is narrower: what does this cable have to carry in this installation, and does the label prove it.
Why cables are rated in bandwidth, not versions
HDMI Licensing changed the naming model precisely because the old version labels were being printed on cables that could not meet them. A cable is now described by a speed tier, and the tier is verified by a certification program with a scannable label and an app based check.
The four tiers in use today
Standard Speed at 2.25 Gbps, High Speed at 10.2 Gbps, Premium High Speed at 18 Gbps, and Ultra High Speed at 48 Gbps. Anything sold today for a 4K or 8K display should be Premium or Ultra. Standard Speed belongs to 1080i equipment and should not be bought new.
What the version number still tells you
The port version tells you which features the source and sink can negotiate: variable refresh rate, auto low latency, enhanced audio return channel, and the maximum link rate. The cable has to be at least as capable as the weakest port, otherwise the link trains down.
Bandwidth against resolution and refresh rate
Uncompressed video needs a fixed slice of bandwidth. The table below uses 8 bit colour, which is the common case for consumer displays, and assumes no display stream compression.
| Signal | Payload | Cable tier | Typical passive length |
|---|
| 1080p60 | 4.5 Gbps | High Speed | 10 m |
| 4K30 4:4:4 | 8.9 Gbps | High Speed | 7 m |
| 4K60 4:4:4 | 17.8 Gbps | Premium High Speed | 5 m |
| 4K120 4:4:4 | 35.6 Gbps | Ultra High Speed | 3 m |
| 8K60 4:4:4 | 71.3 Gbps with DSC | Ultra High Speed | 3 m |
Reading a cable label without being fooled
Certification label and QR code
Premium and Ultra High Speed cables carry a holographic label with a QR code. Scanning it opens the certification record for that cable model. No label means no verified bandwidth, whatever the packaging says.
Advertising language to ignore
Words such as future proof, 8K ready, version 2.1 certified and gaming grade carry no defined meaning. The only claims worth trusting are the tier name, the Gbps figure and the certification record.
The e-marker question
HDMI cables do not carry an electronic marker the way USB-C cables do. The link is trained by the source and sink, and the cable is passive. That is exactly why the physical build and the certification are the only guarantees available.
Matching cable to equipment in practice
Buy for the weakest certified need in the chain, then add headroom only where length demands it. A PlayStation 5 feeding a 4K120 television needs Ultra High Speed, and at 2 m a certified passive cable is enough. The same console feeding a 4K60 projector needs Premium at most, and the money is better spent on a longer, better shielded Premium cable.
Long runs change the answer. Above 5 m at 18 Gbps, and above 3 m at 48 Gbps, certified passive copper stops being dependable. Active copper or a fiber hybrid cable takes over, and those cables are directional, with source and display ends marked.
Practical scenarios
- New 4K120 television: one Ultra High Speed cable at 2 m, certification label checked before the packaging is discarded.
- Office projector at 12 m: Premium High Speed is enough at 4K60, but the length forces an active or fiber cable rather than a passive one.
- Old 1080p set top box: a High Speed cable that already works is fine. Replacing it changes nothing measurable.
- Soundbar with enhanced audio return channel: the cable must support the return channel and the audio format, so buy the certified tier rather than the cheapest one that fits.
FAQ
Is there an HDMI 2.2 cable?
The specification has moved forward on the port side, but consumer cables are still sold by bandwidth tier. If a cable carries the Ultra High Speed certification at 48 Gbps, it is the highest tier currently defined for retail.
Will an old HDMI cable work with a new console?
Often at reduced settings. The link trains to what the cable supports, so a High Speed cable will cap a modern console at 4K30 or 1080p120 depending on the display.
Do I need a new cable for 4K120?
Yes if the existing cable is not Ultra High Speed certified. The signal rate doubles against 4K60, and uncertified cable that worked before usually fails at the higher rate.
Next step
Start from the display, not the marketing. For a 4K120 or 8K panel, buy a certified HDMI 2.1 cable and keep the run short. For a 1080p or 4K30 installation, the HDMI 1.4 cable page shows why an older certified cable is still adequate, and the general HDMI cable guide covers connector types and shielding for long runs.
