Memory Upgrade

Discussion in 'MacBook Pro' started by gtfisher, Dec 28, 2013.

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  1. gtfisher, Dec 28, 2013

    gtfisher macrumors newbie

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    Dec 28, 2013
    #1
    Hi

    I have got Apple MacBook Pro "Core i5" 2.5 13" Mid-2012 with

    2 x 2GB 1Rx8 PC3-12800S SODIMM installed, can I replace one of these with

    a 4GB 2RX8 PC3-10600S, so I can run with 6GB in place of the current 4GB.

    any help much appreciated

    regards,

    gtfisher
     
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  2. DeltaMac, Dec 28, 2013

    DeltaMac macrumors G3

    DeltaMac

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    Delaware
    #2
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  3. yusukeaoki, Dec 28, 2013

    yusukeaoki macrumors 68030

    yusukeaoki

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    Tokyo, Japan
    #3
    It will run, but I suggest getting faster and the same type of RAM.
     
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  4. snaky69, Dec 28, 2013

    snaky69 macrumors 603

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    #4
    RAM works best in matched pairs, so I would personally recommend you swap out both sticks at the same time for best performance.

    I would also use the same RAM speed as what your computer came with as you may cause instabilities.
     
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  5. raptor402, Dec 28, 2013

    raptor402 macrumors 6502

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    #5
    As everyone else has already pointed out, using differently sped DIMMs in each socket is highly unstable. If you really need the upgrade, either get 2*4GB 12800 RAM or replace one 2GB DIMM with a similarly specced (12800 speed) DIMM.

    Personally, I would advise the former option as equally filling sockets is the best way to go.

    Regards
    Raptor
     
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  6. gtfisher, Dec 29, 2013

    gtfisher thread starter macrumors newbie

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    Dec 28, 2013
    #6
    Thanks

    Hi All,

    Thanks for all the informative replies - I was just trying to get away with what I have on the shelf, but I will go for a matched pair of the correct speed.

    Thanks you
     
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