Can I take the RAM from the current 15" MBP and put it into the late 2008 MBP?

Discussion in 'MacBook Pro' started by wilywampa, May 2, 2011.

  1. wilywampa macrumors member

    Joined:
    Sep 21, 2007
    #1
    I ordered a 15" MBP :)D) with 4GB of RAM. I also ordered 8GB of RAM to put in it from Newegg. I'm wondering if I can replace the 2GB of RAM in my old Late 2008 15" MBP with the memory from the new computer to increase the old laptop's resale value. It seems to be the same form factor, but the new memory is PC3-10600 DDR3 1333 and the old memory is PC3-8500 DDR3 1066 MHz. Does that affect compatibility? Thanks!
     
  2. altecXP macrumors 65816

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    Aug 3, 2009
  3. gorskiegangsta macrumors 65816

    gorskiegangsta

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    Mar 13, 2011
    Location:
    Brooklyn, NY
    #3
    Are you sure the 2008 model has DDR3? If so, then it means the 2008 model is compatible with DDR3 so there should be no issues, it'll just downclock to 1067mhz.
     
  4. Icy1007 macrumors 6502a

    Icy1007

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    Feb 26, 2011
    Location:
    Cleveland, OH
    #4
    The late 2008 models run with Core 2 Duos, right? I don't think Core 2 Duos use DD3. They use DDR2, which would mean that you wouldn't be able to use it in your old MBP. Just look under "About this Mac" and it should say what memory it uses.
     
  5. ViviUO macrumors 6502

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    Jul 4, 2009
    #5
    Later C2D's used DDR3
     
  6. AlphaDogg macrumors 68040

    AlphaDogg

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    May 20, 2010
    Location:
    Boulder, CO
    #6
    Yes. I'm 101% sure that my Core 2 Duo MacBook Pro has a Core 2 Duo processor in it. Later models of the Core 2 Duo processor is capable of DDR3. As long as the OP has a 2008 unibody MBP, it should work alright. I'm not sure if there are compatibility issues with the 1333mhz ram, though.
     
  7. wilywampa thread starter macrumors member

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    Sep 21, 2007
    #7
    It is the unibody MacBook. Will it hurt anything to try installing it?
     
  8. gorskiegangsta macrumors 65816

    gorskiegangsta

    Joined:
    Mar 13, 2011
    Location:
    Brooklyn, NY
    #8
    If your 2008 model does have DDR3 in it - that means it'll be compatible. It'll just downclock to 1067.

    Try installing it and if the computer doesn't start up and/or sees performance issues just swap the old one back :cool:
     
  9. snaky69 macrumors 603

    Joined:
    Mar 14, 2008
    #9
    I believe your macbook uses ddr2 memory,whereas the newer MBP's use DDR3. There is difference in voltage requirements for those two standards. You can install it in the macbook, it just won't boot, but you won't damage anything.

    Why are you trying to do this in the first place?
     
  10. mharpo macrumors newbie

    Joined:
    Jun 24, 2010
    #10
    All you have to do is look at "About this Mac" to find out whether it's ddr2 or 3...
     
  11. wilywampa thread starter macrumors member

    Joined:
    Sep 21, 2007
    #11
    This page says the Late 2008 15" MBP uses DDR3 memory. I will check for sure when I get home today by looking at "About this Mac." As I said in the original post, I am doing this because I am upgrading the RAM in the new MBP as soon as it's delivered, and upgrading the RAM in the old MBP should get me more $$$ when I sell it. Thanks for the help, everyone.
     
  12. Naimfan macrumors 68040

    Naimfan

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    Jan 15, 2003
  13. y0zza macrumors regular

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    Mar 10, 2005
    Location:
    UK
    #13
    As some have mentioned, the Late 2008 Unibody uses DDR3 1067 MHz.

    RAM from the 2011 MBP will work fine albeit at 1067 MHz.

    I upgraded to 8GB DDR3 1333 in my Late 2008 (was same price as the DDR3 1067) and the same sticks are working fine in the new 2011 MBP.
     

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