Just bought a new 27" imac. Installed 32 GB ram and have the orginal 8 GB (2 sticks) left over. I have a March 2009 iMac which will take up to 8 GB ram. Will the ram from the new iMac work in the 2009 iMac?
Thanks for the help.
iMac (24-inch Early 2009), OS X Mountain Lion (10.8.3)
The Late 2012 iMac uses PC3-12800 1600 MHz DDR3 RAM, and the Early 2009 iMac uses PC3-8500 1066 MHz RAM, so you can't use the memory of your Late 2012 iMac into the Early 2009 iMac. Read > http://support.apple.com/kb/HT1423?viewlocale=en_US#2
If you want to buy more memory for your old computer, you can do it in OWC or Crucial > http://www.macsales.com
Early 2009 iMacs use PC3-8500 1066 Mhz DDR3 RAM.
The new iMacs use PC3-12800 1600 Mhz DDR3 RAM.
So the answer to your question is, unfortunately, no.
Hi Brandon, Thank you for replying to VaMichael's question. I had a similar question. I have a Late 2009 iMac which uses PC3-8500 1066 Mhz DDR3 RAM. Recently I purchased the iMac 5K which uses PC3-12800 1600MHz DDR3 SDRAM. Since I upgraded the memory of my 5K to 32GB, I now have 2x4GB PC3-12800 as spare. I was wondering if I could install it in the Late 2009 iMac. Thanks to your answer I am not going to. VaMichael, Thank you for asking this question.
tried a PC3-12800 on my Early 2009 iMac. and its gave me three beeps. thats means the RAM is not compatible with Early 2009 iMacs
Will late 2012 iMac memory work in a March 2009 iMac?
