Je wil in principe eigenlijk altijd een zoveel mogelijk gelijke geheugen setup tenzij je niet anders kan, immers anders is je performance per socket niet consistent.
Ik zou dus eigenlijk deze guidelines volgen uit het document:
To maximize memory bandwidth of a server, the following rules should be followed:
Balanced the memory across the processor sockets – all processor sockets on the same physical server should have the same memory DIMM configuration.
Balance the memory across the memory controllers – all memory controllers on a processor socket should have the same memory DIMM configuration.
Balance the memory across the populated memory channels – all populated memory channels should have the same total memory capacity and the same total number of ranks.
All Lenovo server offerings with 4th Gen AMD EPYC Processors support one DIMM slot per DDR channel (1DPC). Peak memory bandwidth performance is achieved when each processor socket is populated with 12 identical DIMMs.
For optimal memory bandwidth configuration, follow these steps:
Determine the required memory capacity per socket.
Divide this memory capacity by twelve to determine the minimum memory capacity needed per DDR channel.
Round this calculated memory capacity per channel to the nearest DIMM capacity.
Populated each processor socket with twelve identical DIMMs with the capacity determined in the step above.
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