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Chapter 3: Maintenance and Component Installation
Memory
Note
: Check the Supermicro website for recommended memory modules.
Memory Support
The X11SCL-iF supports up to 64 GB of unbuffered (UDIMM) DDR4 (288-pin) ECC memory
(1-DIMM per channel) with speeds of up to 2666 MHz in two 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)
1 Slot Per Channel
DRAM Density
1DPC
4GB
8GB
1.2V
Unbuffered
DDR4 ECC
SR
8GB
(2x 4GB DIMMs)
16GB
(2x 8GB DIMMs)
2666
DR
16GB
(2x 8GB DIMMs)
32GB
(2x 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.