Adding memory in an iMac

ceport · ceport #1 (**permalink**)

12-17-2010, 11:02 AM

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.

chscag · chscag #2 (**permalink**)

12-17-2010, 01:58 PM

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.

chscag #2 (permalink)
Member Since: Jan 23, 2008 Location: Fort Worth, Texas Posts: 32,376 Mac Specs: 21.5" iMac 2.5 GHz i5, iPad 3rd Gen., 3 iPods	12-17-2010, 01:58 PM 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. Community Guidelines
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ceport #1 (permalink)
Member Since: Mar 01, 2010 Location: Utah Posts: 17 Mac Specs: iMac 27" 2.7 GHz 4GB Ram	12-17-2010, 11:02 AM 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.
	QUOTE Thanks

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