can I putt 1067Mhz Memory in a 667Mhz machine?

[techbeat]

I upgraded to two 4GB sticks in my macbook pro i5 15".. I removed the two 2GB sticks and would like to give them to my friend who has an older macbook that just has two 500MB sticks in his. I hear a rumor that it would work fine. Just not at optimal speed. anybody done this?

 

[Intell]

Yes and they work just as fast as the proper speed. But they must both be the same kind and have the same data rate. Example: DDR3 ram will not work in a DDR2 machine.

 

[logana]

Yes and they work just as fast as the proper speed. But they must both be the same kind and have the same data rate. Exampl: DDR3 ram will not work in a DDR3 machine.

I think he means that DDR3 won't work in a DDR2 machine.....

If your friend's MacBook has only 1GB ram in it then it will be the non-unibody white/black MacBook. This will only work with DDR2 ram and DDR3 will not physically fit in the ram slots.....

 

[Intell]

I think he means that DDR3 won't work in a DDR2 machine.....

That I do.