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Chapter 3: Maintenance and Component Installation
Memory Population Guidelines
• All DIMMs must be DDR4.
• Balance memory. Using unbalanced memory topology, such as populating two DIMMs in
one channel while populating one DIMM in another channel, reduces performance. It is
not recommended for Supermicro systems.
•
installed CPUs.
Guidelines Regarding Mixing DIMMs
• Populating slots with a pair of DIMM modules of the same type and size results in inter-
leaved memory, which improves memory performance.
• Use memory modules of the same type and speed, as mixing is not allowed.
• x4 and x8 DIMMs can be mixed in the same channel.
•
•
DIMM Construction
• RDIMM (non-3DS) Raw Cards: A/B (2Rx4), C (1Rx4), D (1Rx8), E (2Rx8)
• 3DS RDIMM Raw Cards: A/B (4Rx4)
• LRDIMM (non-3DS) Raw Cards: D/E (4Rx4)
• 3DS LRDIMM Raw Cards: A/B (8Rx4)
Memory Population Sequence
Blue slots versus black slots:
in the black slot.
The following memory population sequence table was created based on guidelines provided
by Intel to support Supermicro motherboards. The diagram is for illustrative purposes; your
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