Memory Support And Installation; Memory Support; Dimm Module Population Configuration - Supermicro X11DPU User Manual

Super X11DPU User's Manual

2.4 Memory Support and Installation

Note: Check the Supermicro website for recommended memory modules. Exercise
extreme care when installing or removing DIMM modules to prevent any damage.

Memory Support

The X11DPU supports up to 1536 GB of Load Reduced DIMM (LRDIMM),
Registered DIMM (RDIMM), Non-Volatile DIMM (NV-DIMM) DDR4 (288-pin) ECC
2666/2400/2133/1866/1600/1333 MT/s modules in 24 slots memory slots.
the DDR4 memory module in 2DPC system configuration on this MBD will affect memory
bandwidth performance. Populating these DIMM modules with a pair of memory modules
of the same type and size will result in interleaved memory, which will improve memory
performance.
Notes: 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. When installing memory modules, be sure to populate the first DIMM module on
the blue memory slot, which is the first memory slot of a memory channel, and then
populate the second DIMM in the black slot if 2DPC memory configuration is used. 3.
Using unbalanced memory topology by populating two DIMMs in one channel while
populating one DIMM in another channel will result in reduced memory performance.
4. Memory speed is dependent on the type of processors used in your system. 5.
Using unbalanced memory topology such as populating two DIMMs in one channel
while populating one DIMM in another channel on the same motherboard will result in
reduced memory performance.

DIMM Module Population Configuration

For optimal memory performance, follow the table below when populating memory.
DDR4 Memory Support for the Intel Xeon Scalable Processor Platform
Ranks
Per
Type DIMM
and Data
Width
RDIMM SRx4
RDIMM SRx8
RDIMM DRx8
RDIMM DRx4
QRX4
RDIMM 3Ds
8RX4
LRDIMM QRx4
QRX4
LRDIMM 3Ds
8Rx4
Speed (MT/s); Voltage (V); Slots per Channel (SPC) and DIMMs per Channel (DPC)
DIMM Capacity
(GB)
1DPC (1-DIMM per Channel)
4 Gb 8 Gb 1.2 V
8 GB 16 GB 2666
4 GB 8 GB 2666
8 GB 16 GB 2666
16 GB 32 GB 2666
N/A 2H-64GB 2666
N/A 4H-128GB 2666
32 GB 64 GB 2666
N/A 2H-64GB 2666
N/A 4H-128 GB 2666
36
2 Slots per Channel
2DPC (2-DIMM per Channel)
1.2 V
2666
2666
2666
2666
2666
2666
2666
2666
2666
Populating