2 Samsung SM951s on 1 M.2 PCIe Adapter?

Discussion in 'Mac Pro' started by 5050, Aug 29, 2015.

  1. 5050 macrumors regular

    Joined:
    May 28, 2009
    #1
    Looking for a single M.2 PCIe adapter designed to connect two SM951s (1 cMP PCIe slot for 2 SM951s). One SM951 blade would be used as a bootable System SSD and the other as a separate mountable SSD.

    Any suggestions?

    Thanks!

    Jonathan
     
  2. bokkow macrumors regular

    bokkow

    Joined:
    May 3, 2012
    Location:
    The Netherlands
    #2
    What you want would limit these drives severly: PCI-e 2.0 x4 has a max throughput of 2000MB/s. All of these expansion cards are x4 based. And I haven't seen any where a second M.2 card doesnt need a SATA cable or a PCI-e riser cable. Would be nice if there was a x8 expansion card indeed :)
     
  3. IowaLynn macrumors 6502a

    IowaLynn

    Joined:
    Feb 22, 2015
    #3
    One good 1TB unit :) and isn't there an even larger 2TB blade on the near horizon?

    The need for distinct separate devises because ____ ?
     
  4. flowrider macrumors 601

    flowrider

    Joined:
    Nov 23, 2012
    #4
    Yes, BUT - I believe there would still be a problem on a cMP. It appears that those 4 lane cards are restricted to half speed or 2.5GT/s (in slot 2, the 16 lane slot) rather than the full 5.0GTs you get in slot 3, the 4 lane slot). I would suspect an 8 lane card would have the same limitation.

    http://barefeats.com/hard200.html

    Lou
     
  5. bokkow macrumors regular

    bokkow

    Joined:
    May 3, 2012
    Location:
    The Netherlands
    #5
    O yes, you're right indeed, so even if a hypothetical 8 lane card exists this wouldn't be the solution you're hoping for.

    Going for one large unit seems to be a better choice!
     

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