What are Rev A's, Rev B's, and etc.?

Discussion in 'Buying Tips and Advice' started by philipxz, May 12, 2009.

  1. philipxz macrumors regular

    philipxz

    Joined:
    May 15, 2007
    #1
    Hello,

    I know all about product updates but I've been hearing all about Rev's...
    How do I know which rev I have?
     
  2. miles01110 macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #2
    They just refer to updates. The original model is "A", the first update is "B", etc.
     
  3. eXan macrumors 601

    eXan

    Joined:
    Jan 10, 2005
    Location:
    Russia
    #3
    You have the first unibody MacBook, so its a rev.A :D

    My 2006 plastic MacBook is second plastic MacBook version, so its rev. B.

    My aluminium iMac is first version, so its rev. A

    Hope thats clear ^^
     
  4. philipxz thread starter macrumors regular

    philipxz

    Joined:
    May 15, 2007
    #4
    Are revisions like an update within update?

    So I have the MacBook 5,1 Rev A? And there will be Macbook 5,1 Rev B then MacBook 5,1 Rev C?

    If there's a MacBook that will receive an update at the WWDC will it be called MacBook 5,2? Or MacBook 5,1 Rev B?

    When does the variable change?
     
  5. appleguy123 macrumors 603

    appleguy123

    Joined:
    Apr 1, 2009
    Location:
    15 minutes in the future
    #5
    with a complete redesign
     
  6. nick9191 macrumors 68040

    Joined:
    Feb 17, 2008
    Location:
    Britain
    #6
    Or architecture change (PowerBook to MacBook Pro).
     
  7. aethelbert macrumors 601

    Joined:
    Jun 1, 2007
    Location:
    Chicago, IL, USA
    #7
    That was indeed a total redesign. Just not on the outside.
     
  8. eXan macrumors 601

    eXan

    Joined:
    Jan 10, 2005
    Location:
    Russia
    #8
    No, its not an update within an update, its just an update.

    Model identifiers change this way:

    - The first MacBook ever had the identifier 1,1. It was revision A.
    - The second MacBook (like mine) was 2,1. It was the same externally and had the same name and the same architecture (Intel), thus becoming a rev. B
    - The third MacBook was 3,1. Again, same everything, just with improved specs - rev. C
    - etc.

    Your MacBook is the first after a redesign (aluminium), but still has the same name, so the model identifier continues from where it left the plastic MacBooks, but revision number resets, becoming a rev. A.

    I hope that's clear ^^
     

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