Memory Population Guidelines; Guidelines Regarding Mixing Dimms; Dimm Construction - Supermicro SuperServer SYS-611C-TN4R User Manual

Memory Population Guidelines

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All DIMMs must be DDR5.
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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.
•
In dual-CPU configurations, memory must be installed in the slots associated with the
installed CPUs.

Guidelines Regarding Mixing DIMMs

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Mixing memory modules of different types, speeds, ranks and vendors is very likely to
cause performance issues, and therefore not recommended.
•
Populating slots with a pair of DIMM modules of the same type and size results in inter-
leaved memory, which improves memory performance.
•
x4 and x8 DIMMs can be mixed in the same channel.
•
LRDIMMs are not supported.

DIMM Construction

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RDIMM (non-3DS) Raw Cards: A/B (2Rx4), C (1Rx4), D (1Rx8), E (2Rx8)
•
3DS RDIMM Raw Cards: A/B (4Rx4)
Chapter 3: Maintenance and Component Installation
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