Image: Pixabay (denvit)

It’s barely been a day since the official announcement for USB4 Version 2.0 and now it seems the new standard may have even more to offer. USB4 Version 2.0 is already known to support up to 80 Gbps but it appears that a particular configuration could allow for up to 120 Gbps.

However, USB4 v2 also enables an asymmetric 3 Tx + 1 Rx configuration, meaning 120 Gbps out from the host and 40 Gbps back from device to host. This asymmetric setup then allows tunneling of the full DisplayPort UHBR20 rate that takes 80 Gbps of bandwidth out to a monitor while simultaneously supporting 40 Gbps bi-directional USB data transfer rates on top of that. This would meet the requirements of a single cable monitor + docking station solution that could handle 8K144 HDR with Display Stream Compression and no chroma subsampling with an integrated 40 Gbps USB hub at full bandwidth with no contention.

USB Type-C introduced the options for both higher power delivery options and display connectivity via the USB standard and now it seems that USB4 Version 2.0 will continue that path. With DisplayPort 2.0 UHBR displays on the horizon, it’s an exciting prospect that PC users might still be able to rely on single-cable USB solutions for them and other accessories.

Source: Angstronomics

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Peter Brosdahl

As a child of the 70’s I was part of the many who became enthralled by the video arcade invasion of the 1980’s. Saving money from various odd jobs I purchased my first computer from a friend of my...

6 comments

  1. This is PCIe 3.0 x16 speeds

    If the latency is good this could be the fix for external GPUs not counting Asus's incredibly expensive proprietary solution
    Thought Thunderbolt could already do that?
  2. Thought Thunderbolt could already do that?
    Not well

    The current iteration is 40gbps and it still has massive problems with stuttering from every review I've watched on it

    This new standard is 40 symmetric and 80 asymmetric, it should 'fix' it

    Not apples to apples but a good comparison of the limits of 40gbps thunderbolt -

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