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  1. #1


    Member Since
    Dec 15, 2008
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    16
    Exceeding Mac's Suggested Amount of RAM?
    Hi folks,

    I have a MacBook Pro (2.16 GHz Intel Core 2 Duo Version 10.6.8), 2 GB 667 MHz DDR2 SDRAM purchased Feb 2007.

    It currently has 2 GB of RAM. I see that Mac says 3 GB is the max. What if I put in 4 GB - does that do any harm? I just upgraded my RAM from 4 to 8 GB in my newer 13" MBP.

    Any ideas if I can do this?

    Thanks!

  2. #2

    dtravis7's Avatar
    Member Since
    Jan 04, 2005
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    iMac 2010 27" QuadI7 OSX10.11, iMac 2008 OSX10.11, MBP Late2011OSX10.11 , iPhone 3GS Note 8!
    From what I have heard if you put in 4GB in an older Mac that only accepts 3, only 3 will show up and the other 1GB will not, but it will still work.

  3. #3

    bobtomay's Avatar
    Member Since
    Dec 22, 2006
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    Texas, where else?
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    15" MBP '06 2.33 C2D 4GB 10.7; 13" MBA '14 1.8 i7 8GB 10.11; 21" iMac '13 2.9 i5 8GB 10.11; 6S
    And it's suppose to maintain the dual channel mode since you're putting in matched pairs. I have 4 GB in my late '06 model for this reason.
    I cannot be held responsible for the things that come out of my mouth.
    In the Windows world, most everything folks don't understand is called a virus.

  4. #4

    dtravis7's Avatar
    Member Since
    Jan 04, 2005
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    iMac 2010 27" QuadI7 OSX10.11, iMac 2008 OSX10.11, MBP Late2011OSX10.11 , iPhone 3GS Note 8!
    Quote Originally Posted by bobtomay View Post
    And it's suppose to maintain the dual channel mode since you're putting in matched pairs. I have 4 GB in my late '06 model for this reason.
    Oops. Forgot to mention that. Thanks Bob. Dual Channel is a bit faster than mismatched RAM would be.

  5. #5


    Member Since
    Dec 15, 2008
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    16
    Thanks guys - so to clarify. If I put in 2 x 2 GB in my old MPR no bad side effects predicted?

  6. #6

    osxx's Avatar
    Member Since
    Jan 19, 2008
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    houston texas
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    Specs:
    09 MBP 8GB ram 500GB HD OS 10.9 32B iPad 4 32GB iPhone 5 iOs7 2TB TC Apple TV3
    Quote Originally Posted by bothynights View Post
    Thanks guys - so to clarify. If I put in 2 x 2 GB in my old MPR no bad side effects predicted?
    As long as its the right ram I like using Crucial and their scan ware .

  7. #7


    Member Since
    Dec 15, 2008
    Posts
    16
    When you say "right" RAM. The 4 GB I plan to use are form my new 13" MBP (bought in May of 2011) - so if it was MAC, it shoudl be fine?

    Sorry, new to this

  8. #8

    osxx's Avatar
    Member Since
    Jan 19, 2008
    Location
    houston texas
    Posts
    4,695
    Specs:
    09 MBP 8GB ram 500GB HD OS 10.9 32B iPad 4 32GB iPhone 5 iOs7 2TB TC Apple TV3
    Your newer 2011 MBP is 1333MHz and your older one uses 667 MHz so I would think not.

  9. #9


    Member Since
    Dec 15, 2008
    Posts
    16
    Thanks! Yip, opened up old MBP and found out the RAM from my new MBP that I had removed today does not fit into old MBP (the tiny slot in the RAM is offset).

    Thanks! It is a good learning experience!

  10. #10

    j0nb0y32's Avatar
    Member Since
    Sep 16, 2011
    Location
    Doha, Qatar
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    401
    Specs:
    MacBook Pro 2.2 i7 + MacBook 2.2 Duo 2 (late 2007) + ATV2 + T/C-2Tb + iPhone4 + iPad2 (64gb wifi)
    Quote Originally Posted by osxx View Post
    As long as its the right ram I like using Crucial and their scan ware .
    As osxx said earlier if you use Crucial they have a handy little download CrucialMacScanner that scans your RAM in your computer and will match it entirely for you...takes the worry away. i used it when i upgraded. might be worth a shot.

    J

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