WD Internal 3.5-inch Caviar Green HDDs - 32MB cache vs 64MB cache

Discussion in 'Buying Tips and Advice' started by ToTo Man, Sep 14, 2012.

  1. ToTo Man macrumors regular

    Joined:
    Oct 22, 2008
    #1
    A few weeks ago I ordered a 2TB WD Caviar Green 3.5" internal HDD for my Mac. The model I received was a WD20EARX-00PASB0 6Gbs 64MB.

    I ordered another yesterday from a different supplier thinking I was getting the same model, but this time the model I received was a WDBAAY0020HNC-ERSN 32MB. I don't see any reference to this model on the WD website so I'm assuming it's an older model.

    In real world situations, what differences will I notice between the above two drives?

    I bought one to use on a daily basis for reading stored music and video data, and the other to used as a one-off backup of this data and stored off-site.

    If the 64MB cache version has faster access times, I should use this as the daily access drive, but does this bear out in reality or is the 64MB cache a moot point given that the drive only spins at 5400rpm?

    Please note that my knowledge of HDD design is near to zero so apologies if my questions don't make sense! :eek:
     
  2. Dark Void macrumors 68030

    Dark Void

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    Jun 1, 2011
    Location:
    Cimmerian End
    #2
    In everyday usage you will not really notice a difference.
     
  3. ToTo Man thread starter macrumors regular

    Joined:
    Oct 22, 2008
    #3
    Thanks for clarifying this.
     
  4. Dark Void macrumors 68030

    Dark Void

    Joined:
    Jun 1, 2011
    Location:
    Cimmerian End
    #4
    No worries!
     

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