Released June 2012, Model A1278. Intel processor with Turbo Boost, Up to 512 MB DDR5 Video RAM

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Ram Frequency MHZ max

i have intel i 7 2,9ghz

ram 8gb ddr3 1600 mhz

i think to change ram i don't know if my mac work with 2133 mhz or 1866 mhz new ram

the max is 16gb right or can i install 32?

ho un intel i7 2,9ghz

la mia ram attuale è 8gb ddr3 1600 mhz

pensavo di cambiare ram ma volevo sapere se il mac era compatibile con una frequenza più alta tipo 1866 o 2133

volevo anche sapere se il massimo era 16 o posso metterne anche 32

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If your machine is the non-Retina

Apple MacBook Pro "Core i7" 2.9 13" Mid-2012 Specs

Identifiers: Mid-2012 13" - MD102LL/A - MacBookPro9,2 - A1278 - 2554*

Standard RAM: 8 GB Maximum RAM: 16 GB*

Details: 8 GB of RAM is installed as two 4 GB modules, no slots free.

*Apple officially supports a maximum of 8 GB of RAM, but third-parties have determined that this model actually is capable of using up to 16 GB of RAM with two 8 GB memory modules.

*

RAM Type: PC3-12800 DDR3L Min. RAM Speed: 1600 MHz

http://www.everymac.com/systems/apple/ma...

If your machine is a Retina:

Apple MacBook Pro "Core i7" 2.9 13" Retina 2012 Specs

Identifiers: Retina Late 2012 - BTO/CTO - MacBookPro10,2 - A1425 - 2557

If so, there are no RAM slots and the machine is not upgradable.

http://www.everymac.com/systems/apple/ma...

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I don't think that 2133 with work, but 1866 will most likely work without any major issues. That being said, I think that it is best for you to stick with the 1600MHz ram, as using a different RAM speed can cause intermittent issues. In addition, using a faster RAM will not result in any performance improvements, as it's speed will be lowered to the speed of your laptops FSB, which is set at 1600MHz.

The maximum ram limit is 16GB, and either way, that is the most that you will be able to install as there aren't any RAM sticks that are larger the 8GB in the format that your laptop takes.

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