Transcend launches JetDrive 820 PCIe Gen3 x 2 SSD for MacBook Pro/MacBook Air

Discussion in 'MacBook Pro' started by tubeexperience, Jun 9, 2018.

  1. tubeexperience, Jun 9, 2018
    Last edited: Jun 9, 2018

    tubeexperience macrumors 68040

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    #1
  2. Audit13 macrumors 68040

    Audit13

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    #2
    I wonder if these allow bootrom updates during OS upgrades and their speed compared to using third-party nvme drives with a pci-e adapter.
     
  3. tubeexperience thread starter macrumors 68040

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  4. terraphantm macrumors 68040

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    The PCIe 4x NVMe drives are definitely faster. Though it seems you sacrifice some battery for that

    Screen Shot 2018-06-08 at 6.37.41 PM copy.jpg

    This is bus limited too. If this macbook supported PCIe 3.0, I'd get somewhere around 3200 read and 1800 write
     
  5. treekram macrumors 68000

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    #5
    The Transcend JetDrive 820 is not new. This article describing it dates from August 2017.
    https://9to5mac.com/2017/08/28/how-to-upgrade-your-mac-ssd/

    A search also turns up multiple posts on this forum mentioning the JetDrive 820, so for those of us who have mentioned them it in previous posts, "under the radar" needs to be qualified.
     
  6. terraphantm macrumors 68040

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    I wish I could get that thunderbolt enclosure without the drive itself
     
  7. treekram, Jun 9, 2018
    Last edited: Jun 9, 2018

    treekram macrumors 68000

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    The JetDrive 825 enclosure looks like it's meant for Apple SSD's (I guess?) or the JetDrive 820. Were you looking (like a lot of people) for an enclosure for a standard PCIe NVMe SSD instead?
     
  8. terraphantm, Jun 9, 2018
    Last edited: Jun 9, 2018

    terraphantm macrumors 68040

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    No, I just upgraded my Macbook with an NVMe SSD, and now have a "512GB" proprietary Apple SSD that's collecting dust
     
  9. tubeexperience thread starter macrumors 68040

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  10. terraphantm macrumors 68040

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    Yeah that's an option and probably what I'll end up buying. Thunderbolt would have been nice for the speed since the PCIe SSD can saturate the USB 3 bandwidth.
     
  11. treekram macrumors 68000

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    The specs for the JetDrive 825 says it's Thunderbolt 1, PCIe Gen3 x2. In my 2014 Mini (PCIe x2) with a x4 NVMe SSD, I get mid-700 MB/s read/write. That seems to be what MBP's with the x2 (AHCI) interface get as well, but people with the 1TB SSD are able to get close to 1000 MB/s in the pre-2015 MBP's. So, the 825 enclosure should be faster, but not by a 2x+ multiple (unless one has the 1TB SSD, which may approach the TB1 speed). I don't know what type of speed the OWC enclosure gets.
     
  12. Tozovac macrumors 65816

    Tozovac

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    #12
    Selling? Works in a 2013/2014 MBA?
     

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