Ram issue 16gbx1 on 2012 macbook pro 13"

Discussion in 'MacBook Pro' started by mihairomanian, Nov 28, 2018.

  1. mihairomanian macrumors newbie

    Joined:
    May 15, 2016
    #1
    Hi everyone,
    So I am greatly confused by the fact that I had a 2011 macbook pro 13" running with 24gb of ram no issues for the last 3 years. I had a 16gb crucial ddr3l module and a 8gb ddr3 module ( i know its a ****** setup ). Anyways after parting with my 2011 macbook pro and handing it over to my sister I decided to grab a 2012 macbook pro 13" just because I loved this form factor so much and it also had some much needed upgrades ( usb 3.0, better igp, etc. ). I have come to find that the 2012 macbook pro does not use the 16gb ddr3L module that had been working on my 2011 macbook pro. At first i thought it was the module itself and so i reached out to crucial and placed an RMA request. The new module arrived and I installed it , with again the macbook not even reading it or using the 16gb memory, I thought that it was crazy that I would have another messed up module but again i reached out to Crucial and placed an RMA request. I received now my 2nd replacement and it still wont read or use the 16gb from this module, What is up ???? What do I need to do ? is it an EFI firmware issue ? do I need to downgrade ?

    My current EFI for my mid 2012 macbook pro is : MBP91.00D9.B00
    SMC version: 2.2f44
    OS : Mavericks ( Love the old look over the new look )
     
  2. mihairomanian thread starter macrumors newbie

    Joined:
    May 15, 2016
  3. leman macrumors G3

    Joined:
    Oct 14, 2008
    #3
    Intel memory controllers of that time didn’t support 16GB RAM sticks. I assume that your old laptop had the NVidia chipset which might have supported it.
     
  4. mihairomanian thread starter macrumors newbie

    Joined:
    May 15, 2016
    #4
    my laptop was the 13inch 2011 model, and it did work.
     
  5. robvas macrumors 68030

    Joined:
    Mar 29, 2009
    Location:
    USA
    #5
    1600MHz DDR3 PC3-12800 in the 2012
    vs
    1333MHz DDR3 PC3-10600 in the 2011

    What speed is your chip?

    It shouldn't work, though.
     

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4 November 28, 2018