1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

News USB4 combines USB 3.2, Thunderbolt

Discussion in 'Article Discussion' started by bit-tech, 5 Mar 2019.

  1. bit-tech

    bit-tech Supreme Overlord Staff Administrator

    Joined:
    12 Mar 2001
    Posts:
    2,513
    Likes Received:
    44
    Read more
     
    bit-tech, 5 Mar 2019
    #1
  2. David

    David Take my advice — I’m not using it.

    Joined:
    7 Apr 2009
    Posts:
    13,397
    Likes Received:
    2,310
    Is that correct? Dual lane is 20Gb/s and TB3 uses four lanes for 40Gb/s. I spent a lot of time searching for a longer full bandwidth TB3 cable and encountered hundreds claiming to be just that until you dig down to discover they are "only" 20Gb/s cables.
     
    David, 5 Mar 2019
    #2
  3. edzieba

    edzieba Virtual Realist

    Joined:
    14 Jan 2009
    Posts:
    3,358
    Likes Received:
    324
    The interesting part is only going to come when the actual spec is available, and we can tell whether this supersedes USB 3.2 (host Thunderbolt/DP/HDMI alternate modes supported-but-optional parts of the protocol) or operates in parallel as a 'high end' spec - basically replacing Thunderbolt 3 - to allow simplified branding of "USB 4 port is best USB port".
     
    edzieba, 5 Mar 2019
    #3
  4. Gareth Halfacree

    Gareth Halfacree WIIGII! Staff Administrator Super Moderator Moderator

    Joined:
    4 Dec 2007
    Posts:
    12,838
    Likes Received:
    2,044
    No, no it is not: it's the result of my misreading the, in my defence very badly phrased, following line:
    The fact the "using existing USB Type-C cables" is referred to by number of lanes and the "over 40Gbps-certified cables" is referred to by speed totally confuzzled my brain: in actual fact, they're saying you'll get 20Gb/s (or 10Gb/s, if you're not on USB 3.2 Gen 2x2) using two lanes on existing USB cabling and 40Gb/s requires new cables which are, presumably, four-lane and may or may not be any different to Thunderbolt 3 four-lane cables.

    I'll go fix, ta!
     
    Gareth Halfacree, 5 Mar 2019
    #4
  5. David

    David Take my advice — I’m not using it.

    Joined:
    7 Apr 2009
    Posts:
    13,397
    Likes Received:
    2,310
    Wow, that was poorly phrased - you'd think they would try harder, given it's their job to promote it.
     
    David, 5 Mar 2019
    #5
  6. perplekks45

    perplekks45 LIKE AN ANIMAL!

    Joined:
    9 May 2004
    Posts:
    5,914
    Likes Received:
    430
    It did what it was supposed to do: confuse matters to make marketing easier. Can't break a promise you never made.
     
    perplekks45, 6 Mar 2019
    #6
Tags: Add Tags

Share This Page