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Q: Can I add 4GB 1333MHz DDR3 SDRAM to a 21.5" iMac that already has 4GB 1067 MHz DDR3?

Can I add 4GB 1333MHz DDR3 SDRAM to a 21.5" iMac that already has 4GB 1067 MHz DDR3?

 

I have replaced the memory on a newer iMac, and have two spare 2GB modules.  Would like

to add them to an older iMac that runs with slower modules.  Both the old and the new are DDR3.

The only difference is speed,  1067MHz for the old, 1333 for the new.

Posted on Aug 10, 2012 2:27 PM

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Q: Can I add 4GB 1333MHz DDR3 SDRAM to a 21.5" iMac that already has 4GB 1067 MHz DDR3?

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