Intel D50DNP Series - Appendix B. Memory Population Rules; DDR5 DIMM Population Rules; Intel Optane Persistent Memory 300 Series Module Rules

Intel® Server D50DNP Family Integration and Service Guide
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Appendix B. Memory Population Rules
B.1 DDR5 DIMM Population Rules
Notes:
• Intel does not provide support for systems populated with “Un-like” (non-matching) DIMMs. However,
the system may still operate if all the mixed DDR5 DIMM population rules are followed. Validation and
support of these configurations is the sole responsibility of the original system integrator.
• For best compatibility and system operation, Intel highly recommends that all installed DIMMs have
“identical” or “like” attributes as defined in the Intel DDR5 support disclaimer.
• DDR5 DIMM can be installed in any slot.
• Mixing DDR5 DIMM rules:
o Mixing DDR5 DIMMs of different speeds and latencies is not supported within or across
processors. If a mixed configuration is encountered, the BIOS attempts to operate at the highest
common speed and the lowest latency possible.
o Mixing DDR5 DIMM types (standard RDIMM, 3DS-RDIMM, 9x4 RDIMM) within or across processors
is not supported. This will result in a fatal error halt during memory initialization.
• For RDIMM or 3DS RDIMM, same DIMM construction should be used across all slots on a socket
o No x4 mixing with x8 across a socket
o No 16Gb / 24Gb mixing
• DDR5 DIMM capacity must be the same for all populated slots.
• Memory slots associated with a given processor are unavailable if the corresponding processor
socket is not populated.
• Processor sockets are self-contained and autonomous. However, all memory subsystem support
(such as memory RAS and error management) in the BIOS Setup utility are applied commonly for
both installed processors.
• For best system performance, memory must be installed in all eight channels for each installed
processor.
• For best system performance in dual processor configurations, installed DDR5 DIMM type and
population for DDR5 DIMMs configured to CPU 1 must match DDR5 DIMM type and population
configured to CPU 0.
B.2 Intel® Optane™ Persistent Memory 300 Series Module Rules
• Intel® Optane™ PMem 300 series modules are only supported in the configuration of four DDR5
SDRAM DIMMs and four Intel® Optane™ persistent memory (PMem) 300 series modules per
processor.
• Intel® Optane™ PMem 300 series modules can only be installed on memory channels A, C, E, and G for
each processor.
• Only Intel® Optane™ PMem 300 series modules are supported. Previous Intel® Optane™ PMem
generations (such as 100 series and 200 series) are not supported.
• Support for Intel® Optane™ PMem 300 series modules is only available on air-cooled systems.
• Mixing of different DIMM types on the system is not supported nor validated.
o Intel® Optane™ persistent memory 300 series modules must have the same capacity and type
across or within all sockets.
o DDR DIMMs must have the same capacity and type across or within all sockets.
• Intel® Optane™ PMem 300 series modules are not supported with 9x4 DDR5 DIMMs.