Independent memory mode with mixing ranks

• Single-rank RDIMMs can be mixed with dual-rank RDIMMs when there are 16 DIMMs populated for each processor.

• Mixing of DDR5 4800 MHz 128 GB and 256 GB 3DS RDIMMs is supported when there are 16 DIMMs populated for each processor.

• Quad-rank 3DS RDIMMs can be mixed with octal-rank 3DS RDIMMs when there are 16 DIMMs populated for each processor.

• If a memory channel has two DIMMs with different ranks, populate the DIMM with a higher number of ranks in slot 0 (furthest from the processor) first.

DIMM slot installation sequence for one processor​

When installing DIMMs with different ranks with only one processor (Processor 1) installed, follow the sequence below and install higher rank DIMMs first; then, install the lower rank DIMMs into the remaining slots.

DIMM slot installation sequence for two processors​

When installing DIMMs with different ranks with two processors installed, follow the sequence below and install higher rank DIMMs first; then, install the lower rank DIMMs into the remaining slots.