Resolved Did I get a dud? Why is my write speeds cap out at 320 MB/s? Is this normal?

Discussion in 'MacBook Air' started by waa1futs, Aug 7, 2013.

  1. macrumors 6502

    Joined:
    Oct 2, 2012
    #1
    I downloaded the Disk Speed Test app by BlackMagicDesign and my speeds will usually average:

    Write 320 MB/s & Read 700 MB/s

    I've seen reviews talking about both being 700 MB/s, so why then is my write speeds capping out at 320 MB/s? :confused:

    Here's an article by a guy who found a massive difference in write speeds between two mackbook air's he got as well (one being a Samsung SSD and the other being a Marvell SSD)

    Did I get a dud? Should I be concerned about this? Is that write speed normal for others?
     
  2. macrumors 65816

    adnbek

    Joined:
    Oct 22, 2011
    Location:
    Montreal, Quebec
  3. thread starter macrumors 6502

    Joined:
    Oct 2, 2012
    #3
    Thank you :)

    It is the 128gb version.
     
  4. macrumors 65816

    adnbek

    Joined:
    Oct 22, 2011
    Location:
    Montreal, Quebec
  5. macrumors 6502a

    Joined:
    Nov 6, 2008
    Location:
    nyc
    #5
    you may have the sandisk model. I believe the samsung can reach over 400 for the 128
     

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