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Chiuy

macrumors 6502
Original poster
May 24, 2011
305
0
NorCal, Bay Area
I just upgraded my MBP 2011 to 8GB and I have these 4GB 133MHz ram leftover. Can I install it onto my MacBook 2009 Early?
 
I just upgraded my MBP 2011 to 8GB and I have these 4GB 133MHz ram leftover. Can I install it onto my MacBook 2009 Early?

Yes, even if the 2009 used 1066/1067 ram it will just down clock your leftover ram. As long as they're both using DDR3 it should be fine.

Cheers,
 
Yes, even if the 2009 used 1066/1067 ram it will just down clock your leftover ram. As long as they're both using DDR3 it should be fine.

Cheers,


I believe this laptop will recognize it at 1333. I have an early 09 c2d iMac and came with 1066 stock. I installed the 8gb 1333 kit on it and it reads it and haven't had a kernel panic or any problems.
 
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