iMac (Retina 5K, 27-inch, Late 2015)

I have this iMac : iMac (Retina 5K, 27-inch, Late 2015) and for now 4x8 Gb 1867 MHz DDR3.

Is it possible to put 4 x 16 Gb 1867 MHz DDR3 into this type of iMac ?

What is the maximum.

Thanks for your answers.

Gil

iMac 27″, macOS 10.15

Posted on Oct 22, 2020 4:31 AM

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Question marked as Top-ranking reply

Posted on Oct 22, 2020 6:53 AM

YES, you can install 4X16 GB RAM modules in your iMac. 64 GB is the max that will work in your machine. i would recommend you purchase RAM from OWC.


RAM for Late 2015 iMac


3 replies

Oct 22, 2020 7:57 AM in response to gil120

+1 on the recommendation for getting the RAM from OWC. 64GB is over Apple's "official" —and outdated—max RAM specs but lesser RAM brands/quality often won't allow you to reach those higher levels. We know OWC tests in Macs so they are my go-to supplier when I need to install more RAM than Apple said when the newer, larger modles were not available.



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iMac (Retina 5K, 27-inch, Late 2015)

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