Startech vs Smfeltec for m.2 SSD

Discussion in 'Mac Pro' started by hamishb, Apr 6, 2018.

  1. hamishb macrumors member

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    #1
    Has anyone benchmarked these? I will put SM951 AHCI boot drive plus an NVME blade for user files / storage.

    I understand Startech can take two blades whereas the Amfeltec Squid will take 4 blades.

    Cost of Amfeltrc is much more than Startech. Worth the extra?
     
  2. h9826790 macrumors G4

    h9826790

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    #2
    Which StarTech card?
     
  3. hamishb thread starter macrumors member

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    #3
  4. h9826790 macrumors G4

    h9826790

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    #4
  5. XNorth, Apr 6, 2018
    Last edited: Apr 6, 2018

    XNorth macrumors regular

    XNorth

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    #5
    No benchmarks to compare, but it's safe to say the Startech card, being a SATA controller, will be much slower than the Amfeltec. For a two SATA SSD blade RAID, you might get 500 MB/s. I have a RAID with four SATA SSDdrives achieving about 1000 MB/s on a different SATA controller card.

    The Amfeltec card, being a AHCI/NVMe controller, could provide up to 3500MB/s for a single drive. I get 5000MB/s with four Samsung 960 blades.
     
  6. bsbeamer, Apr 6, 2018
    Last edited: Apr 6, 2018

    bsbeamer macrumors 68000

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    #6
    Do you need a SINGLE PCIe for your bootable and separate media?

    Ultimately it comes down to figuring out what speeds you are looking to achieve and what your budget is. There are options, but if you're already concerned about the cost difference between two PCIe cards, I doubt you're going to be thrilled with the costs involved with trying to reach those much faster speeds.
     
  7. XNorth macrumors regular

    XNorth

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    #7
    BTW, M.2 is just a physical form factor. Both NVMe and SATA SSD drives can be M.2, but the specs for their communications interfaces are very different.
     
  8. hamishb thread starter macrumors member

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    #8
  9. XNorth macrumors regular

    XNorth

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    #9
    If you are lookin for a dual NVMe card, why not go with this one? I have no experience with it on a Mac, but it's the only dual NVME card I can find.
    http://www.supermicro.com/products/accessories/addon/AOC-SLG3-2M2.cfm
     
  10. PowerMike G5 macrumors 6502

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    #10
    I hav ethe Amfeltec. It is the fastest card setup you can get for the cMP, but the most expensive (especially considering you have to populate the slots with SSDs as well). It splits the x16 slot into 4 dedicated x4 slots, so you can get max speeds and flexibility, but for a price.

    I've run my 4 SM951s in RAID 0 and have achieved over 5000MB/s r/w. But I've found it far more efficient using each slot as dedicated SSDs for separate things (OS/Scratch Disk/Media Cache/Raw Media) for my video work. Depends on what your end goals are.
     
  11. AidenShaw macrumors P6

    AidenShaw

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    #11
  12. hamishb thread starter macrumors member

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    #12
    Thanks everyone. So if you have an M.2 drive in your cMP, what card have you used to install it? Locomotive, BPlus or something else?

    Cost of NVMe drives are less than AHCI so makes sense to have both; AHCI to boot and NVMe for storage.

    Trying to cost effectively add both.

    Also waiting for new nVidia Volta cards so my son can upgrade his graphics card and I can get his old one, which is better than the stock ATI card I currently have.
     

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