2.26 or 2.4 GHz / White plastic unibody enclosure

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Max Ram intake for MacBook Unibody Model A1342 mid 2010

I'm thinking of upgrading my MacBook Unibody Model A1342 mid 2010's ram to 16gb is this possible if not what is the max ram my macbook will take?

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Yes your system can support 16GB of RAM.

But you do need to be running Lion or Mountain Lion and the EFI firmware needs to be the latest.

If you are using Snow Leopard then the max is 8GB.

Here's Apples TN Note it states you can only go to 4GB (which was true when the system was introduced, but no longer the limit) MacBook: How to remove or install memory.

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Could it be DDR3? I know that it suports only DDR2 but is there any backwards-compatibility for these modules?

I have 8Gb installed, but I'd like to double increase my RAM. DDR2 8GB sticks are very hard to find and they are expensive, compared to DDR3.

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Sadly, no you can substitute DDR3 modules for DDR2. The modules are keyed differently so you can't fit them in as well. Here's a good writeup on the differences: DDR vs. DDR2 vs. DDR3: Types Of RAM Explained.

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