64gb ram on 5k iMac?


macrumors 65816
Original poster
Dec 29, 2011
Does anyone know if you can run 64gb of ram in the new iMac with 16gb dimms?


macrumors 65816
Jul 30, 2013
The United States of America
Based upon the previous-generation 27" iMac models, the max was 32GB (Using 4 x 8GB 204-pin), and I have not heard of any 16GB dimms, so currently my answer would be no. That being said, I am not an expert on this, and I may be incorrect.


macrumors G5
Apr 3, 2014
Hong Kong
The max RAM support from Intel base on the CPU release date. Not account for any new higher density RAM. I will call it "max demonstrated", rather than "absolute max".

e.g. My W3690 suppose only support up to 24G of RAM, and I am currently running 32G of RAM in my old Mac Pro with this CPU, and lots of other guys running 48G, someone even push it to 56G. It's more than double of the max from Intel.

Of course, no one can guarantee that this 5k iMac can upgrade to 64G in the future (when the 16G stick available), but the chance is there.