It has to be replaced in pairs, so 4X8GB and 12X2GB should work as well.
Hello, I have a PowerEdge R715 server with 2xAMD CPUs and 16x2GB memory. I'd like to add another 32GB of memory but I read something about that the memory lanes must be populated identically. Is it possible to add 2x16, 4x8GB or 8x4GB and have a total of 64GB? Thank you in advance for your help.
PowerEdge R715 memory upgrade