Memory Support And Installation; Memory Support; Dimm Module Population Configuration - Supermicro X11DSC+ User Manual

2.4 Memory Support and Installation

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

Memory Support

The motherboard supports up to 3TB of 3DS Load Reduced DIMM (3DS LRDIMM), 3DS
Registered DIMM (3DS RDIMM), Non-Volatile DIMM (NVDIMM) DDR4 (288-pin) ECC of up
to 2666 MHz memory modules in 24 slots. Populating the DIMM slots in a 2DPC (two DIMMs
per channel) configuration with pairs of memory modules of the same type, speed and size
will result in interleaved memory, which improves performance.
Notes: 1. When installing DIMMs in a 2DPC memory configuration, first populate the blue
memory slot, which is the first slot of a channel, followed by the black slot. 2. Using an
unbalanced memory topology by installing two DIMMs in one channel while installing one
DIMM in another channel will result in reduced memory performance. 3. Memory speed
is dependent on the type of processors used in your system. 4. Unbalanced memory
configuration is not recommended.

DIMM Module Population Configuration

For optimal memory performance, follow the table below when populating memory modules.
DDR4 Memory Support (for 2-Slot Per-Channel Configuration)
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
35
Chapter 2: Installation
2 Slots per Channel
2DPC (2-DIMM per Channel)
1.2 V
2666
2666
2666
2666
2666
2666
2666
2666
2666