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Chapter 3: Maintenance and Component Installation
3.4 Memory
Memory Support
The X12DDW-A6 has 16 DIMM slots for up to 4TB of 3DS LRDIMM/LRDIMM/3DS RDIMM/
RDIMM DDR4 ECC memory or Intel Optane PMem 200 Series with speeds of 3200MHz.
Intel Optane PMem is supported by the Intel Xeon Scalable Processors Platinum, Gold and
selected Silver processors only. For validated memory, use our
DDR4 Memory Support for 83xx/63xx/53xx/43xx Processors
Type
Ranks
Per DIMM
and Data
Width
DIMM Capacity (GB)
Speed (MT/s)
Two Slots
per Channel
DRAM Density
One DIMM
per Channel
Two DIMMs
per Channel
8 Gb
16 Gb
1.2 Volts
1.2 Volts
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*
LRDIMM 3DS (4R/8R) x4 4H-128GB 2H-128GB
4H-256GB
3200*
*Only the 83xx and 63xx series support 3200MT/s; for other processors, memory speed as supported by the CPU.