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13" aluminum unibody, 2.0 or 2.4 GHz Core 2 Duo processor.

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Can I use the (used after upgrade) ram from my early 2011 MacBook Pro

When I finish upgrading my 2011 I will have the ram that originally came in it. Can I use it on my even older mac book?

Is that a good or bad idea?

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Using a 2011 RAM on a 2010 Macbook should be possible, they have the same size and need same voltages. Specifications though are different as the 2011 Pros use a faster memory. Macs are a bit picky with RAM sometimes, you’ll have a definitive answer only by trying. If you have three beeping sounds at startup or experience kernel panics you’ll have to put back the older one, but it’s worth a try.

You can get a clearer picture on RAM from here: https://support.apple.com/en-us/HT201165...

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@arbaman FYI: If you list a URL its nicer to add the document title. To do that place a opening bracket then the URL then a bar, the title then a closing bracket:

{ URL | Title ]

So your URL would look like this: MacBook Pro: How to remove or install memory

I would also place the source in the title or preface it in my comment, so it would end up looking like Apple T/N: MacBook Pro: How to remove or install memory

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@danj Thanks for the info.

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@arbaman LMBO great answer no matter what it looks like :-)

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Thanks @oldturkey03 , much appreciated :))

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Thanks Arbaman Great link & info

My model is 2008 A1278 (2 GH) came with 1 + 1 gb 1067 DDR3

The 2011 has 2 + 2 gb 1333mhz DDR3

Tried finding info on the 2008 re Ram and didn't come up with anything on the apple website.

I notice that ifixit has 2 GB with 1066 MhZ

and ? this: MacBook 13" Unibody 2 GHz Memory Maxxer RAM Upgrade Kit

somewhere for the 2011 I found info on maxium apple recommends but havent' found it yet for 2008 mac book 2GH A1278.

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