Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I have 4GB of 1067MHz DDR3 RAM, upgrading to 8GB, in my late-2008 Apple MacBook Pro.

Crucial’s scanner says my girlfriend’s slightly older MacBook can support 4GB of 500-something-MHz DDR2 RAM (she has 2GB now).

Is it a really, really terrible idea to put my RAM into her computer?

share|improve this question
(To be clear, I assume it would run at a slower speed, if at all.) –  Alan H. Jan 11 '11 at 1:51

1 Answer 1

up vote 4 down vote accepted

Don't do it

DDR3 and DDR2 are not at all compatible. Different number of pins, different technology, completely different. It won't even fit in the slot properly. Bad idea.

share|improve this answer

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.