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  1. #1


    Member Since
    Jul 03, 2012
    Posts
    4
    changing RAM from 1600mhz to 1066mhz
    Hi there,

    Just bough a 2x4gb 1600Mhz So-DIMM from Kingston to upgrade my early 2009 MacBook Pro.
    When I changed the ram modules, the only thing I heard was three bips.
    After some time, I realized that this models (MAC model is 5.1) only accept RAM running at 1066mhz.
    Yes, I should have made some research before buying the RAM modules

    Obviously, I do not want to lose my money, so I was wondering if there is a way to tune this RAM modules to work at 1066mhz. Is there a way to do this in a MAC? I know there are some apps for that in WINDOWS.

    A little help, please. Thanks!!

    Duarte

  2. #2


    Member Since
    Mar 09, 2011
    Posts
    751
    Specs:
    mbp 15 2009, mbp 13 2010
    stick with what the specific one recommend by the ram manufacturer
    try crucial.com see what they recommend.
    there are requirements to fit for ram upgrade.

  3. #3


    Member Since
    Jul 03, 2012
    Posts
    4
    Thank you for your reply,

    You are absolutely right. I should have paid more attention.

    Althoug the safest thing to do know would be to follow your advise, I just wonder if there is a way to avoid it.
    Since I will lower the speed, there will be no extra-stress upon the components. Maybe I can get away with this mess by "down-clocking" the RAM.
    Is there a way? I'm willing to try it, before I spend more money on some RAM.

    Thank you

  4. #4

    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
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    34,559
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.8.5
    Quote Originally Posted by Duarte Costa View Post
    Is there a way? I'm willing to try it, before I spend more money on some RAM.

    Thank you
    Trying to install 1600mhz ram into a computer that requires 1066mhz ram...is like trying to put 6 gallons of water into a 5 gallon bucket...it just won't work.

    The reason why you're getting the "3 beeps"...is specifically due to incompatible ram. Get the correct ram!

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  5. #5


    Member Since
    Mar 09, 2011
    Posts
    751
    Specs:
    mbp 15 2009, mbp 13 2010
    I take it that you want to upgrade from 2x2gb to 2x4gb. In a way you have to abide by the
    way the configuration set up.
    If you need the real speed upgrade your hard drive to SSD, along with Ram upgrade your
    mbp will speed up to certain degree.
    Again it depends on how you like it, ram upgrade might do it for you.

  6. #6


    Member Since
    Jul 03, 2012
    Posts
    4
    Actually, I need more RAM because of MAYA renders. They are batched in RAM, not in disk. SO, 2x1gb of RAM is clearly not enough.

    Does anyone knows if there is an option in BIOS that set's the RAM speed?

  7. #7


    Member Since
    Mar 09, 2011
    Posts
    751
    Specs:
    mbp 15 2009, mbp 13 2010
    2x2 gb is the max you can upgrade to.

  8. #8


    Member Since
    Jul 03, 2012
    Posts
    4
    Ok, I give up. Will try to get back my money.

    Thanks guys

    "Pior que errar, é não querer aprender com os erros."

  9. #9

    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    34,559
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.8.5
    Quote Originally Posted by Duarte Costa View Post
    Does anyone knows if there is an option in BIOS that set's the RAM speed?
    Macintosh computers do not have BIOS!

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  10. #10


    Member Since
    Oct 30, 2014
    Posts
    1
    hy , upgrade macbook 5.1
    i upgrade my macbook 5.1 >>> > 1066 mhz to 1333 mhz. Now i want to try with 1600mhz

  11. #11

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    48,264
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, El Capitan
    You can upgrade your MacBook Pro to a zillion Mhz memory but it's still only going to run at the factory designed bus speed. You're just wasting money and could possibly damage your MacBook Pro. Only use the memory that was designed for your Mac.

  12. #12

    pigoo3's Avatar
    Member Since
    May 20, 2008
    Location
    U.S.
    Posts
    34,559
    Specs:
    2011 13" MBP 2.3ghz, 8gig ram, OS 10.8.5
    Quote Originally Posted by shalo View Post
    i upgrade my macbook 5.1 >>> > 1066 mhz to 1333 mhz. Now i want to try with 1600mhz
    I'm not 100% sure the pin arrangement on 1066mhz and 1600mhz is even the same (may not fit).

    And like chscag mentioned…you won't see any performance enhancement…since the computer wasn't designed to use this ram (logic board architecture).

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

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