Does Hdmi 1.4b support 4k @ 60hz or do I need 2.0?

Discussion in 'Accessories' started by King_Wolf, Sep 26, 2021.

  1. King_Wolf

    King_Wolf Notebook Geek

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    Just wanted to clarify because I am looking for a laptop that can run with an external 4k monitor @ 60hz.
    Spartan@HIDevolution likes this.
  2. Tech Junky

    Tech Junky Notebook Deity

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    The really short version
    Don't like reading (much)? Here are the highlights:

    • The physical connectors and cables look the same as today's HDMI.
    • Improved bandwidth from 18 gigabits per second (HDMI 2.0) to 48Gbps (HDMI 2.1).
    • Can carry resolutions up to 10K, frame rates up to 120 frames per second.
    • New cables are required for higher resolutions and/or frame rates.
    • Many new TVs have at least one HDMI 2.1 input.
    • The main sources that can take advantage of 2.1 right now are the PlayStation 5 and Xbox Series X, as well as high-end graphics cards like the Nvidia GeForce RTX 3090 and RTX 3080.
    The increased resolution and frame rate possibilities are a futurist's dream:

    • 4K50/60
    • 4K100/120
    • 5K50/60
    • 5K100/120
    • 8K50/60
    • 8K100/120
    • 10K50/60
    • 10K100/120
    You should be able to get 4K/60, and a basic 8K/30, with current cables, but the rest will need an Ultra High Speed HDMI cable. More on these new cables below.

    On the color front, 2.1 supports BT.2020 and 16 bits per color. This is the same as HDMI 2.0a/b, and is what makes wide color gamut possible.

    Those are just the highlights, though. Read on for the details.

    What Kind of HDMI Cables Are There?
    Here are the main types of HDMI cables on the market. Cables are differentiated by their speed and maximum bandwidth. Note that newer cables are compatible with older versions of HDMI on various devices.

    • Standard: This offers a maximum bandwidth of 10.2 Gbps and supports up to 1080p HD resolution. This type of cable is fairly obsolete and does not offer 4K output.
    • High Speed: This offers a maximum bandwidth of 18 Gbps and supports 4K UHD resolution up to 60Hz.
    • Ultra High Speed: This is the latest cable that offers a maximum bandwidth of 48 Gbps. This cable can support 8K UHD resolutions at up to 60hz. While 8K TVs are not common, these cables do offer the best refresh rates for 4K resolution.
    You should read this article to make sure you don't confuse HDMI cables with other types of cables.
    Spartan@HIDevolution likes this.
  3. saturnotaku

    saturnotaku Notebook Nobel Laureate

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    Even shorter version that doesn't include unnecessary technical details:

    You need HDMI 2.0 to run a display at 4K/60 Hz.

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