Can i use '15 13" MBA SSD in '14 13" rMBP?

Discussion in 'MacBook Pro' started by Amethyst, Apr 21, 2016.

  1. Amethyst macrumors 6502

    Joined:
    Aug 8, 2006
    #1
    As i own both mac, the 13" 2015 MBA and 13" 2014 MBP.
    I found that the ssd in mba are faster by a large margin (read ~1GBps vs 400 MBps)

    But as i use the MBP more than MBA, so can i just pull out the mba ssd and install in mbp?
     
  2. JTToft macrumors 68040

    Joined:
    Apr 27, 2010
    Location:
    Aarhus, Denmark
    #2
    You can. But you won't get the full speed, as 2014 machines are PCIe x2 where 2015 machines are PCIe x4. That's mainly what's responsible for the speed difference.
     
  3. Amethyst thread starter macrumors 6502

    Joined:
    Aug 8, 2006
    #3
    Many thanks for useful information.

    What kind of speed i can get with this path?
     
  4. JTToft macrumors 68040

    Joined:
    Apr 27, 2010
    Location:
    Aarhus, Denmark
    #4
    - That I am unsure of. Probably not much more than you already have.

    The size of the drives is also a factor. The larger drive will be faster, so if the Air drive is 512 GB while the Pro is 128 GB, you may see increased speeds.
     
  5. Marpleesi macrumors newbie

    Joined:
    Jan 12, 2015
    #5
  6. JTToft macrumors 68040

    Joined:
    Apr 27, 2010
    Location:
    Aarhus, Denmark
    #6
    - Thanks. Did not know that.

    The link speed is still only at 5.0 GT/s as opposed to 8.0 GT/s on the 2015s, though. But it seems there indeed is something to be gained.
     
  7. Amethyst thread starter macrumors 6502

    Joined:
    Aug 8, 2006
    #7
    I just change mba ssd to mbp, and it scream.

    now my 2014 mbpr get around 1300 mb read and 800 mb write.
     
  8. JTToft macrumors 68040

    Joined:
    Apr 27, 2010
    Location:
    Aarhus, Denmark
    #8
    - Excellent news. Thanks for the update.
     

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