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MacBook Air: You can’t update the RAM in any MacBook Air models.If you MacBook Pro has a Retina display the RAM can’t be updated. But in summary, you can add RAM to the following Macs: We’ll go into more detail about how to add RAM to various Mac models below.
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It may be possible to upgrade the RAM on these models, but it’s a risky business. The biggest problem is that on some models, particularly MacBooks, the RAM is soldered on – making removal near impossible and hazardous to your computer. In some cases the RAM in a Mac is user upgradable, in other cases it is possible to get it upgraded by a service centre, and in some cases (unfortunately) it is not possible to update the RAM at all. Having estabilished that some extra RAM may help your Mac the next big question to answer is whether you will actually be able to add RAM to your Mac.
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