Chosen Solution
My iMac came with 8GB (2 x 4GB memory modules) installed. I would like to increase the Mac’s memory, by installing two more modules into the unused sockets. Can I just add an additional 2 x 8GB modules to raise it up to 24GB, or will there be an imbalance with a mixture of 4 GB and 8 GB modules installed. I vaguely remember similar problems being caused on early Windows PCs.
On the 4K machines I have seen, these: iMac “Core i5” 3.1 21.5-Inch (4K, Late 2015)3.1 GHz Core i5 (I5-5675R) iMac “Core i7” 3.3 21.5-Inch (4K, Late 2015)3.3 GHz Core i7 (I7-5775R) The RAM is soldered onboard and cannot be upgraded at all after the purchase of the system.
