The Thunderbolt 3 wording for the new low end non-Touchbar 13" MBP needs reviewing

Discussion in 'MacBook Pro' started by bxs, Nov 5, 2016.

  1. bxs macrumors 6502

    Joined:
    Oct 20, 2007
    #1
    Reviewing the Apple web page http://www.apple.com/macbook-pro/specs/ Tech specs you will note it says

    Two Thunderbolt 3 (USB-C) ports
    with support for:

    Charging
    DisplayPort
    Thunderbolt (up to 40 Gbps)
    USB 3.1 Gen 2 (up to 10 Gbps)


    Now if one pulls up the Apple+Option -> System Information... you will note that the two Thunderbolt ports are rated at 20 Gbps and not 40 Gbps.

    Thunderbolt 3 is 40 Gbps and not the stated 20 Gbps.

    I was in Apple Store today and discussed this wording with the Genius/Sales/Manager and was told.... "It's OK as it says (up to 40 Gbps)."

    IMO, it's deceptive of Apple to state these two ports are full Thunderbolt 3.

    This support document describes those low-speed ports: https://support.apple.com/en-us/HT207256

    This doc states...

    MacBook Pro (13-inch, Late 2016, Two Thunderbolt 3 Ports) delivers full Thunderbolt 3 performance on both ports.

    which is incorrect as they only provide Thunderbolt 2 performance of 20Gb/s.
     
  2. cmaier macrumors G3

    Joined:
    Jul 25, 2007
    Location:
    California
  3. bxs thread starter macrumors 6502

    Joined:
    Oct 20, 2007
    #3
    Are you implying that running both USB-C ports simultaneously at 20 Gbps provides the "It supports 40Gbps" ?
     
  4. 3pp macrumors member

    Joined:
    Sep 30, 2014
    #4
    From the very article you posted...
    'MacBook Pro (13-inch, Late 2016, Two Thunderbolt 3 Ports) delivers full Thunderbolt 3 performance on both ports.'

    What are you talking about...?
     
  5. cmaier macrumors G3

    Joined:
    Jul 25, 2007
    Location:
    California
    #5
    No. It supports 40 per port.
     
  6. bxs thread starter macrumors 6502

    Joined:
    Oct 20, 2007
    #6
    Then please explain this as reported by the System Information display for the two Thunderbolt3/USB-C ports....

    Screen Shot 2016-11-06 at 2.17.59 PM.png
     
  7. bxs thread starter macrumors 6502

    Joined:
    Oct 20, 2007
    #7
    See Post #6.
     
  8. Macalway macrumors 68000

    Joined:
    Aug 7, 2013
    #8
    It's perhaps a bug in the system info. It's the first thing I looked at with mine.

    I would tend to believe the support document. I mean, think about it. They aren't going to screw up to that extent. Having a bug in the sys is much more likely. Of course you can always test this.

    Then again, it would be amusing if it was true, no? :D
     
  9. curmudgeonette macrumors 6502

    Joined:
    Jan 28, 2016
    Location:
    California
    #9
    See the "x1" after the "20 Gb/s"? Each Thunderbolt port has two outbound lanes (and two inbound lanes). Each lane is 20 Gb/s, and the two (in the same direction) together make 40 Gb/s.
     

Share This Page