Memory for my 2009 iMac

MurphLRC

Reputable
Aug 14, 2014
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I am a long time ready of these forums but never posted. Just like to say thanks to all of the helpful people before I get to my issue. Thanks!

Now, I have a late 2009 iMac, 21.5", 3.06 GHz that takes up to 16gb memory that is 8500. Right now I have 3 2gb modules and 1 1gb module for a total of 7gb of ram. I want to max it out to 16 and have the memory to do so but it is 10600. When I install the 10600 ram it just makes the typical beeping noise all computers make when they are having memory issues.

Is there a reason that my mac will not take this ram and down clock it to 8500? Is there something special I need to do first?

Thanks everyone for your help!