Chapter 2: Installation
2-11
Memory Support
The X9SCM/X9SCL series supports up to 32GB of Unbuffered (UDIMM) DDR3
ECC 1333/1066 MHz DIMMs in 4 memory slots.
DIMM1A
DIMM2A
(Blue Slot)
DIMM2B
(Blue Slot)
DIMM1B
Memory Population Guidelines
When installing memory modules, the DIMM slots should be populated in the following
order: DIMM2A, DIMM2B, DIMM1A and DIMM1B.
• Always use DDR3 DIMM modules of the same size, type and speed.
• Mixed DIMM speeds can be installed. However, all DIMMs will run at the speed
of the slowest DIMM.
• The motherboard will support one DIMM module or three DIMM modules installed,
but it is recommended that a balanced DIMM population (installed in pairs) are
followed for best performance.
Recommended Population (Balanced)
DIMM2A Slot DIMM2B Slot DIMM1A Slot DIMM1B Slot Total System Memory
2GB DIMM 2GB DIMM 4GB
2GB DIMM 2GB DIMM 2GB DIMM 2GB DIMM 8GB
4GB DIMM 4GB DIMM 8GB
4GB DIMM 4GB DIMM 4GB DIMM 4GB DIMM 16GB
8GB DIMM 8GB DIMM 16GB
8GB DIMM 8GB DIMM 8GB DIMM 8GB DIMM 32GB
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