iMac19,1 fusion drive SSD blade sizes

Discussion in 'iMac' started by KonaBlend, Mar 29, 2019.

  1. KonaBlend macrumors member

    Joined:
    Oct 18, 2008
    #1
    can anyone confirm SSD blade sizes for 1TB and 2TB fusion drive options?

    on a related note, does the SSD blade use the same (apple proprietary?) connects to the motherboard as the non-fusion SSD configuration? and curious, is this connector basically M.2 with PCI express? version 3? how many lanes? so many questions i know...
     
  2. vertical smile macrumors 68040

    vertical smile

    Joined:
    Sep 23, 2014
    #2
    The current 2019 iMac's 1TB Fusion Drive has a tiny 32GB SSD. The 2TB and up has 128GB SSD.
     
  3. Zdigital2015 macrumors 65816

    Joined:
    Jul 14, 2015
    Location:
    East Coast, United States
    #3
    32GB for the 1TB and 128GB for the 2TB and 3TB.

    PCIe version 3.0 x4 lanes 8GT/s. Proprietary connector 12+16 pins.

    See this blog post for more info - https://beetstech.com/blog/apple-proprietary-ssd-ultimate-guide-to-specs-and-upgrades
     
  4. naerct macrumors member

    naerct

    Joined:
    Mar 19, 2019
    Location:
    Southern NH
    #4
    Yes, NVMe is a PCI device. Most blades need X4 PCI slots for full speed. In my old 2009 MacPro, a single NVMe blade in a X4 slot only gets me 1.5GB/s reads, since the MOBO is PCI 2.0. That speed nearly doubles in the PCI 3.0 MOBO which most Macs now use. However, I use a IO Crest X16 PCI card/switch ($200) which goes in a X16 slot and essentially gives you two blades on one PCI slot and full PCI 3.0 speeds. It also has a recommended heat sink and fan built into the card/enclosure. Samsung 1TB 970 EVO=2.7GB/s reads and 2.4GB/s writes.
     

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3 March 29, 2019