PCIe Bifurcation in cMP 5,1

Discussion in 'Mac Pro' started by abdyfranco, Dec 4, 2017.

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  1. abdyfranco macrumors regular

    abdyfranco

    Joined:
    Dec 4, 2017
    #1
    Hi,

    Currently, I have 3 of the 4 PCIe slots occupied, leaving only the second x16 slot free.

    I want to install 1 more PCI card and an NVMe SSD, but with a single PCIe slot available it is not possible.

    Looking in Google for a few hours, I found this SuperMicro PCIe card, which converts a single x16 slot into 2 x16 slots actively with a PLX chip (According to the Supermicro website)

    https://www.amazon.com/Supermicro-RSC-R2UG-A2E16-A-Riser-Card/dp/B00D3O2ZE4

    I know that the cMP does not support passive PCIe bifurcation, but I do not know if this active card would work in a cMP.

    Any thoughts?
     
  2. Flint Ironstag macrumors 6502a

    Flint Ironstag

    Joined:
    Dec 1, 2013
    Location:
    Houston, TX USA
    #2
    Contact Supermicro support. Ask them if it's proprietary to their motherboards or not. The chances of someone here having knowledge of that specific board in a Mac Pro are probably pretty slim. No harm in asking, though!
     
  3. abdyfranco thread starter macrumors regular

    abdyfranco

    Joined:
    Dec 4, 2017
    #3
    I'm going to contact the Supermicro support, I'll post an update as soon as they respond.
     
  4. AidenShaw macrumors P6

    AidenShaw

    Joined:
    Feb 8, 2003
    Location:
    The Peninsula
    #4
    In the Windows and Linux worlds, PLX switches are pretty transparent to the OS and drivers. Many combo cards have PCIe switches - I've seen four-port Fibre Channel cards that were two two-port controllers on a card with a switch.

    And the MP6,1 has a PLX switch - so Apple OSX probably would understand them.

    If SuperMicro can't answer - search for a seller with a good return policy.
     
  5. abdyfranco thread starter macrumors regular

    abdyfranco

    Joined:
    Dec 4, 2017
    #5
    Unfortunately I didn't receive any response from SuperMicro, I think my only option is to risk buying it and trying it out.
     
  6. the_zee macrumors newbie

    the_zee

    Joined:
    Aug 5, 2016
    Location:
    East Coast
    #6
    Have you tried it?
     

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5 December 4, 2017