Model A1297 Unibody: Early 2009, Mid 2009, Mid 2010, Early 2011 & Late 2011

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How much maximum RAM does it take?

I was wondering how many slots are there and how much total maximum RAM it can take.

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There are two RAM slots that you can fill with 4 GB RAM chips for a total of 8 GB. In the these series:

Only this series of the 17" MacBook Pro support 16 GB MacBookPro8,3

The older 17" MacBook Pro's MacBookPro3,1 only supports 6 GB of RAM

PC3-8500 4 GB RAM Chip张图片


PC3-8500 4 GB RAM Chip



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What happens if you try to install 16 GB of RAM in a model that only supports 8 GB?

I've seen before certain restrictions to be not true. Just wondering if that's just not 'recommended' instead of really not compatible. thanks!

This is the specs of my MacBook Pro:

  • Model Name: MacBook Pro
  • Model Identifier: MacBookPro5,2
  • Processor Name: Intel Core 2 Duo
  • Processor Speed: 2.66 GHz
  • Number of Processors: 1
  • Total Number of Cores: 2
  • L2 Cache: 6 MB
  • Memory: 8 GB
  • Bus Speed: 1.07 GHz


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Here is the series your system is part of: MacBookPro5,2

The limit of your system is what the PCH can address which sadly is only 8 GB in this series.


You can install 16GB RAM in the 17" 2011 Macbook Pros if they have been updated to OS-X Mavericks (previously limited to 8GB max).

Here are the only 17" models that can support 16 GB: MacBookPro8,3


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And have the latest EFI firmware!

Dan, Yes! forgot to mention that!! :)

Unfortunately, I wasn't able to do this. I have a mid-2010 15-inch MBP 6,2 with a 2.66 GHz i7, running the latest EFI firmware from Apple's official firmware page. The 16GB kit I installed (from Crucial, 2x8GB) either caused a kernel panic on bootup, a freeze on bootup, or would eventually cause sudden shutdown when more than 8GB was addressed after running normally for a little while. I've researched this for quite a bit, and I can't seem to resolve why some people have been able to get this to work, and others haven't. I'd appreciate any clues you might have!

You can now go up to 16GB with two 8 GB modules (very expensive) in the early 2011 models once you have updated the systems firmware.

You can install 2x8 Gb RAM, for a total of 16 Gb.

It's ok. The MBP works fine (and quick).


My MacBook Pro is one of the MacBookPro5,2 series. I wasn't notified automatically about the EFI upgrade...

Although I upgraded to Maverick and I can see so much improvement...

I would DEFINITELY put more RAM tomorrow if i could...

I just can't know if mine will accept it or not... since the EFI hasn't been proposed by apple


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Here's the link to the Apple TN EFI & SMC firmware updates for Intel-based Macs Double check your system, it maybe you have the newest already.

And only the newer Unibody i5/i7 models can be upgraded to 16GB the older models can't. I would double check your system with Apple before you buy any modules. Do get a good name brand of module.


Last 3 digits of mine are 8YA. Can anyone tell me how much I can install?


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Plug in your systems serial number here: EveryMac - Lookup We can't use the last 3 digits any more to identify your system. Open the URL it offers up for your systems details and what it the RAM limit.



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