WD my passport ultra 2tb - LOW SPEED

Discussion in 'Mac Accessories' started by ressac, Nov 24, 2014.

  1. ressac, Nov 24, 2014
    Last edited: Nov 24, 2014

    ressac macrumors regular

    Joined:
    Oct 30, 2011
    #1
    hello i've bought today subject, and tried on mac os 10.9.5
    speed write or read is REALLY LOW, 30mb/s
    yes i did install all stuff, like drivers, wd software etc...
    smart test look good, i formatted drive few times already, but speed is so poor ((
    any solution? or tips?
    thx

    p.s. MacBook Pro (13-inch Late 2011)
     

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  2. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #2
    Your 2011 model only has USB2, so those speeds look about right.
     
  3. ressac thread starter macrumors regular

    Joined:
    Oct 30, 2011
    #3
    you're right

    but i've tried this hdd on windows 7 machine with core 2 duo and mobo asus p5k-e which is 6-7 year old

    and there 10mb/s plus on read/write --> 42 mb/s read 35 mb/s write
     
  4. Boyd01 macrumors 68040

    Boyd01

    Joined:
    Feb 21, 2012
    Location:
    New Jersey Pine Barrens
    #4
    I have several of the USB2 passport drives. They clock around 35MB/s write on my 2013 MBA (with USB3 interface). Your speeds seem a little slow, but if the drive is fragmented that could explain it. What drivers did you install? I don't think any should be necessary. Is your drive formatted for MacOSX?

    Now it's interesting, these same drives are much faster on my Windows machine (i5, Win 7 Pro), maybe 60 MB/s. I wonder if this is due to the windows FAT32 formatting, since it doesn't do journaling like MacOSX?

    I also have a passport ultra, like yours. With USB3 on my MBA, it clocks over 100 MB/s.
     
  5. ImBuz macrumors 6502

    ImBuz

    Joined:
    Oct 23, 2014
    Location:
    California
  6. ressac thread starter macrumors regular

    Joined:
    Oct 30, 2011
    #6
    i did all test after format hdd, so it was completely empty.

    yes drivers give a some boost to speed, for example on win7 it was pretty same as on mac, but after install wd ses driver it gives reading 42mb/s, writing 32mb/s
    same goes on mac driver wd +turbo driver but in this case boost was just a tiny, about 3-5 mb/s in writing and reading maybe 3mb/s more

    i've done different variation of tests with different file systems on hdd, and in my case speed remains same:
    win7 - fat32 and ntfs - speed was same
    mac os - fat32 - hfs+ - speed was same

    as a conclusion, i think it all about mbp mobo controller, but i cant be sure about this 100% because i didn't test hdd from windows on mbp.

    ----------

    which model of mbp? and external hdd?
     
  7. ressac thread starter macrumors regular

    Joined:
    Oct 30, 2011
    #7
    just tested hdd speed again , and speed changed to better

    i don't know why it's faster than yesterday, all i did it's to check for bad sectors using WD Drive Utilities.
     

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