Additional memory module installation
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.