42 Peripheral Devices Connected to One 2013 Mac Pro

Discussion in 'Mac Blog Discussion' started by MacRumors, Apr 28, 2014.

  1. MacRumors macrumors bot


    Apr 12, 2001

    Since Thunderbolt ports can support up to six peripherals in a daisy chain, which is a wiring scheme where multiple devices are chained together in a certain order, Macworld decided to test how many devices they could daisy chain together with the new mac pro's six Thunderbolt ports, four USB 3.0 ports, one HDMI port and two gigabit Ethernet ports.

    Macworld named the test the "Mac Pro Daisy Chain Challenge" and was able to connect a total of 42 peripheral devices to the Mac Pro.
    Only a dozen of the drives were being powered from the cables connecting them to the Mac Pro. The 24 remaining drives required external power and had to be plugged into three power strips with an attached Watts Up power meter. The combine power draw when Macworld ran a script that copied data from the Mac Pro's internal flash storage to the drives was 865 Watts.

    Through Mac OS X's Activity Monitor, the lab found that there was a combined throughput of 3 Gbps. The rate slowed as the fastest drives, of which OWC's Mercury Helios was the fastest, finished transferring data.

    The lab also found that the daisy chains didn't affect the performance of a single drive working alone. Rather, the location of the drive within the daisy chain affected performance. For instance, one drive's average write speed was 709.8 Mbps when tested at the beginning of the daisy chain and without a daisy chain and only 556.7 Mbps when placed at the end of the chain.

    The full list of devices connected to the Mac Pro, along with more information on the challenge and future tests can be found at Macworld.

    Article Link: 42 Peripheral Devices Connected to One 2013 Mac Pro
  2. saintforlife macrumors 6502a

    Feb 25, 2011
  3. spaceageliving macrumors newbie

    Aug 25, 2011
    That's great and all...

    ..but all I want is more than 1TB and I have to have some crap hanging off his beautiful system.
  4. Peace macrumors P6


    Apr 1, 2005
    Space--The ONLY Frontier
    I am impressed. More by the amount of money that would cost rather than the number of devices connected.
  5. penter macrumors 6502a


    Jun 15, 2006

    Just a curiosity... I wonder what would happen if all devices were powered through the connecting cable... I'm assuming that would generate lots of heating and strain on the mac pro, no?
  6. CartoonHeroII macrumors member


    Apr 21, 2004
    Rigby, ID
  7. Jessica Lares, Apr 28, 2014
    Last edited: Apr 28, 2014

    Jessica Lares macrumors G3

    Jessica Lares

    Oct 31, 2009
    Near Dallas, Texas, USA
    Wow, and all the devices together are probably the weight of a few Mac Pros.
  8. Digital Skunk macrumors 604

    Digital Skunk

    Dec 23, 2006
    In my imagination
    Why do people get a kick out of unrealistic, impractical uses of technology?

    No one would ever daisy chain that much hardware via a non-locking cable. I am sure even the builder wouldn't no where to begin looking if a part of the chain unmounted.
  9. ChristianJapan macrumors 68040


    May 10, 2010
    I'm six minutes too late to make the same comment ;)

    And yes, that's really messy, but impressive too
  10. Freyqq macrumors 68040

    Dec 13, 2004
  11. puckhead193 macrumors G3


    May 25, 2004
    They spent all there money on peripheral's and forgot to buy a chair and desk... :rolleyes:
  12. FuNGi macrumors 65816


    Feb 26, 2010
    Wow. And I still haven't found a need to use one of my 2 Thunderbolt ports.
  13. Mr. Retrofire macrumors 601

    Mr. Retrofire

    Mar 2, 2010
    Typical for the new age.

    This is a more realistic picture:
    [thanks to user "cc bcc" @ arstechnica]
  14. JoEw macrumors 65816


    Nov 29, 2009
    Thunderbolt is such a cool technology, sad it is really only for pro people. I think adoption rates will stay low.
  15. Parasprite macrumors 68000


    Mar 5, 2013
    I love how they add something without any wires to the bottom right, just for kicks. Also, a Superdrive and a Blu-Ray player? I'm not sure what the purpose of having both is other than doing disc->disk (which would be faster without the Superdrive anyways).

    Also, I wasn't aware the old Mac Pro had a built-in UPS.
  16. GenesisST macrumors 68000


    Jan 23, 2006
    Where I live
    He must be really popular with the ladies with that setup! :D
  17. AnonMac50 macrumors 65816

    Mar 24, 2010
    It's not a UPS. It's just a power point.
  18. jayducharme macrumors 68030


    Jun 22, 2006
    The thick of it
    So what you're saying is that the old Mac Pro could hold 42 separate internal devices?

    This was an exercise in stretching a NMP to its limits. I doubt anyone would consider adding that many peripherals. A single multi-bay disk enclosure and perhaps an optical drive (although those are rapidly becoming obsolete) wouldn't add much clutter at all. With the NMP's six T-Bolt ports, 4 USB 3 ports, 2 ethernet ports and HDMI, many people could get by without even a dock.
  19. nagromme macrumors G5


    May 2, 2002
    Have the White Knights charged in yet to defend poor defenseless pros from the horrors of the new Mac Pro, despite not actually themselves experiencing the issues they like to parrot?

    Hopefully not.

    I like the Pro design because it provides a replaceable "performance hub" with the speed-critical components separated from the tower chassis (if you even truly need one) beside it. The SSD, RAM, CPU and GPU are in one super-quiet unit, leaving you the "expandability" to keep everything else when you upgrade those some years down the road. Icing on the cake: at least 3 of those individual components can be swapped out as well.

    Of course, it's more fun to pretend that pros never used externals before :p
  20. Nunyabinez macrumors 65816


    Apr 27, 2010
    Provo, UT
    And here's how they both look when they are put into a closet the way most real professionals do (despite nagromme's objections ;) ).

  21. OriginalMacRat macrumors 6502

    Mar 9, 2007
    USB can't be daisy chained.
  22. Nunyabinez macrumors 65816


    Apr 27, 2010
    Provo, UT
    But it can be "hubbed", which is how they got 15 devices all connected to the mac.
  23. OriginalMacRat macrumors 6502

    Mar 9, 2007
    Hubbed is not a daisy chain.
  24. osofast240sx macrumors 68030


    Mar 25, 2011
    Because it just shows how well the system will work when it is put into a realistic situation

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