Lycom DT-120 MacPro 4,1

Discussion in 'Mac Pro' started by Sipheren, May 1, 2018.

  1. Sipheren macrumors regular

    Sipheren

    Joined:
    May 28, 2006
    Location:
    Aus/Gold Coast
    #1
    Hi,

    I got myself a Lycom DT-120 card and a Samsung 860 EVO M.2 drive to use on my Mac, when I connect it to any of the PCI slots it just doesn't show up at all.

    I have another card that you connect directly to a SATA port to use the M.2 and that works fine but I was after the extra speed from using PCIe.

    From what I have read this card should show up, but even it doesn't show up under PCI at all.
     
  2. h9826790 macrumors G4

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #2
    Of course it won't show up.

    860Evo is a SATA SSD. No matter in M.2 form factor or not, it need a SATA controller to work with.
    Screen Shot 2018-05-02 at 07.28.15.png
    The DT-120 is just a simple adaptor without any controller onboard. It can only work with PCIe AHCI / NVMe SSD, but not any SATA SSD.
     
  3. Sipheren thread starter macrumors regular

    Sipheren

    Joined:
    May 28, 2006
    Location:
    Aus/Gold Coast
    #3
    Right, to many different types has confused me, would you happen to know which drives are AHCI ones? I will do some Google as well, at least I know the issue now.

    Cheers
     
  4. h9826790 macrumors G4

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #4
    May be you can still get the used Samsung XP941 on eBay etc. Very very little SM951 out there are also AHCI, and Kingston HyperX Predator is also AHCI.

    Anyway, it's hard to get AHCI nowadays. And there is almost no reason to get it now.

    With the latest macOS, the only advantage AHCI over NVMe is just natively bootable on cMP. But booting from AHCI SSD has virtually no advantage over booting from SATA SSD (roughly the same boot time, same system responsiveness, same apps loading time). Then why insist to get a super rare and expensive AHCI SSD for booting?

    If for fast data access / scratch / storage only, then NVMe SSD is cheaper and faster (in some area).

    If you really want to boot from NVMe, then all you need is just combine a SATA SSD and a NVMe SSD into a fusion drive. Then this new "drive" will be bootable (only recommend this in High Sierra).
     

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