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Chapter 3: Maintenance and Component Installation
3.5 Memory
Memory Support
The X12DHM-6 has 32 DIMM slots to support up to 8TB of 3DS LRDIMM/LRDIMM/3DS
RDIMM/RDIMM DDR4 (288-pin) ECC memory with speeds of 3200/2933/2666 MHz and up
to 8TB of Intel Optane PMem 200 Series with speeds of up to 3200 MHz.
For validated memory, use our
.
Check the Supermicro website for
possible updates to memory support.
Memory Installation Sequence
Memory for this motherboard is populated using the "Fill First" method. The DIMM slots
with blue release tabs are considered the first DIMM of their channel, and those with white
release tabs are the second of the channel. When installing memory modules, be sure to
populate the memory slots with the blue release tabs first and then populate those with the
white release tabs.
General Memory Population Requirements
1. Be sure to use the memory modules of the same type and speed on the motherboard.
Mixing of memory modules of different types and speeds is not allowed.
2. Using unbalanced memory topology such as populating two DIMMs in one channel while
populating one DIMM in another channel will result in the reduced memory performance.
3. Populating memory slots with a pair of DIMM modules of the same type and size will
result in interleaved memory, which will improve memory performance.
DDR4 Memory Support
Type
Ranks per DIMM
and
Data Width
DIMM Capacity (GB)
Speed (MT/s) and Voltage (V)
One DIMM
per Channel
Two DIMMs
per Channel
8GB
16GB
1.2 V
1.2 V
RDIMM
SRx8
8GB
16GB
3200
2933*
SRx4
16GB
32GB
DRx8
16GB
32GB
DRx4
32GB
64GB
RDIMM 3Ds
(4R/8R) x4
2H-64GB
4H-128GB
2H-128GB
4H-256GB
LRDIMM
QRx4
64GB
128GB
3200
3200
LRDIMM 3Ds
(4R/8R) x4
4H-128GB
2H-128GB
4H-256GB
3200
3200
