Model A1286. Released February 2011 / 2.0, 2.2, or 2.3 GHz Quad-core Intel Core i7 Processor

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Confused about my mac memory upgrade

I have a Mac pro 15" Early 2011, 2.2 GHz Intel Core i7. I am confused as I have searched my model and some says that it has a memory max of 16gb. Although when I clicked on about my mac I get something else:

MacBook Pro (15-inch, Early 2011)

Processor 2.2 GHz Intel Core i7

Memory 4 GB 1333 MHz DDR3

And when I click on the memory tab I get this:

Your Mac contains 2 memory slots, each of which accepts

a 1333 MHz DDR3 memory module.

All memory slots are currently in use.

So basically I can't upgrade my ram to an additional 8 ram? I'm stuck with a 4?

If you can please clear this for me I am confused.

Answered! View the answer I have this problem too

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Yes, this can be confusing. Lets see if we can clear things up:

First your system has two (2) memory slots which can be populated with different sized modules 1, 2, 4 or 8 GB.

In your case your system has two 2 GB modules presently (your total of 4 GB). If you take them out you could put in two 4 GB (giving you 8 GB total) or two 8 GB (giving you 16 GB total).

Your other option here is replacing only a single module which gives you one 2 GB and adding either a 4 GB or 8 GB which give you a total of 6 GB or 10 GB respectively. Frankly I don't like doing this as you do loose the interleaf feature which you have a matched pair of models of the same size and specs (make and version).

Bottom line: Get the amount you want with two matched modules.

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Johan will be eternally grateful.
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