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Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

Adding memory in an iMac


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ceport

 
Member Since: Mar 01, 2010
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My iMac currently has two 512 MB cards installed. Can I replace just one of them with a 2GB card or do I have to use equal sized cards in each slot?
On the crucial.com website it indicates unequal size cards are okay, but I have also heard that the performance will suffer if they are not the same in both slots.
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chscag

 
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You should always install memory modules in matched pairs if possible. That will yield the best performance.

NOTE: Your iMac can accept 4 GB of memory (2 x 2 GB modules), however, only 3 GB will be addressed.
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