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Chapter 3: Maintenance and Component Installation
Memory
Note
: Check the Supermicro website for recommended memory modules.
Memory Support
The X11SCM-LN8F supports up to 64GB of unbuffered (UDIMM) DDR4 (288-pin) ECC
memory (2-DIMM per channel) with speeds of up to 2666MHz in four memory slots. Refer
to the tables below for the recommended DIMM population order and additional memory
information.
DIMM
Type
Ranks Per
DIMM and
Data Width
DIMM Capacity
(GB)
Speed (MT/s), Voltage (V),
Slot Per Channel (SPC),
and DIMM Per Channel (DPC)
2 Slots Per Channel
DRAM Density
1DPC
2DPC
4GB
8GB
1.2V
1.2V
Unbuffered
DDR4 ECC
SR
16GB
(4x 4GB DIMMs)
32GB
(4x 8GB DIMMs)
2666
2666
DR
32GB
(4x 8GB DIMMs)
64GB
(4x 16GB DIMMs)
General Guidelines for Optimizing Memory Performance
•
The blue slots must be populated first.
•
Always use DDR4 memory 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. However, to achieve the best
memory performance, a balanced memory population is recommended.
