Ask Different is a question and answer site for power users of Apple hardware and software. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

My parents have an iMac circa 2007. Documentation says that this model should use this type of RAM:

Memory: DDR2 PC2-5300 Memory Type: DDR2 PC2-5300, DDR2 (non-ECC) Maximum Memory: 4GB

I've got a couple of 2GB RAM chips lying around that I just pulled from my "new" iMac. The info on the chips reads:

2GB 1Rx8 PC3

Will these work in my parent's iMac, or am I just asking for trouble?


share|improve this question
Apple's support knowledge base is probably the most definitive source for answers for this question. – koiyu Nov 23 '12 at 17:09


Those new iMacs are using DDR3, and it won't even fit.

DDR2 are pretty cheap right now, you can get some off the Internet.

share|improve this answer
Thanks for your help -- figured as much. – alex cutter Nov 23 '12 at 16:25
You can read more about DDR2/3 on Wikipedia! – Shane Hsu Nov 23 '12 at 16:40
And Other World Computing has your back for legacy upgrades. – Dan J Nov 23 '12 at 17:08

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.