HT201191: Install memory in an iMac
Learn about Install memory in an iMac
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Helpful answers
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Jul 16, 2012 4:51 PM in response to sharonfrombaysideby Kappy,Could be a bad module, could be the wrong type of module, could be a defective slot. Your model uses two - 200-pin PC2-5300 (667MHz) DDR2 SO-DIMMs. You may install up to 6 GBs although Apple only certifies 4 GBs. 6 GBs may not always work.
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Jul 16, 2012 5:27 PM in response to sharonfrombaysideby sharonfrombayside,I have the right module, but the seller thinks it might be defective and is willing to replace it. I'll try that. I have been reading that the Macs are fussy about the quality of the RAM it accepts. Mine was fairly cheap (though not the cheapest) , so maybe that's an issue. I'll see what happens when I get the new one. Thanks for the quick reply.
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Jul 16, 2012 5:30 PM in response to sharonfrombaysideby Kappy,Cheap RAM is really not an issue. The vendor is more important than the price of the RAM or the brand, but be sure to get RAM that carries a manufacturer's lifetime warranty. This usually is not the least expensive RAM.