Dimm Module Population Sequence - Supermicro H12DSG-O-CPU User Manual

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DIMM Module Population Sequence

When installing memory modules, the DIMM slots should be populated in the following
order: DIMMA2, DIMMB2, DIMMC2, DIMMD2, DIMME2, DIMMF2, DIMMG2, DIMMH2, then
DIMMA1, DIMMB1, DIMMC1, DIMMD1, DIMME1, DIMMF1, DIMMG1, DIMMH1.
The blue slots must be populated first.
Always use DDR4 DIMM modules of the same type, size and speed.
Mixed DIMM speeds can be installed. However, all DIMMs will run at the speed of the
slowest DIMM.
The motherboard will support odd-numbered modules (1 or 3 modules installed). However,
to achieve the best memory performance, fully populate the motherboard with validated
memory modules.
Figure 2-2. DIMM Numbering
33
Chapter 2: Installation

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