Need confirmation on this SSD...

Discussion in 'Mac Pro' started by jbarley, Oct 1, 2018.

  1. jbarley macrumors 68040

    jbarley

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    Vancouver Island
  2. tsialex macrumors 601

    tsialex

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    Brazil
    #2
  3. jbarley, Oct 1, 2018
    Last edited: Oct 1, 2018

    jbarley thread starter macrumors 68040

    jbarley

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    #3
  4. tsialex, Oct 1, 2018
    Last edited: Oct 2, 2018

    tsialex macrumors 601

    tsialex

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    #4
    M2 format has 3 types of cards.

    1. SATA = it's just a SATA disk in a different format. Same characteristics as a SATA drive, can be converted to the same format as SATA 2.5" drives using adaptors.
    2. PCIe AHCI = it's a real PCIe SSD that uses PCIe 2x or 4x with AHCI protocol. The simplest one to use in a MP.
    3. PCIe NVMe = it's a real PCIe SSD that uses PCIe 2x or 4x with NVMe protocol.
    Any M2 SATA SSD will need an adaptor and a cable, usually you buy a card that gets power from the PCIe slot and has a connector to plug a SATA cable to the SATA ODD ports on the backplane. It's a bad choice for a Mac Pro since you will loose one PCIe slot and one ODD drive bay to use a slow drive.
     
  5. MIKX macrumors 6502a

    MIKX

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    Japan
    #5
    jbarley

    tsialex is 100% correct but this post #207 https://forums.macrumors.com/thread...-0-ssd-performance-for-the-cmp.2124253/page-9 might also help you undertstand the differences in M.2 blade.

    There are quite a few "2 BLADE " M.2 adapters out there that support either ONE ( now bootable in High Sierra ) NVMe or AHCI blade. . . .or // / ONE SATA M.2 SSD blade .. = they require a SATA cable to your cMP's SATA DATA PORT.

    Look at the socket connectors in the above post.

    You'll soon understand.
     
  6. jbarley thread starter macrumors 68040

    jbarley

    Joined:
    Jul 1, 2006
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    Vancouver Island
    #6
    Thank you for the explanation, now this explains the low price which I sorta felt might be too good to be true.:(
     

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5 October 1, 2018