Memory Support And Installation; Memory Support - Supermicro X11DPFF-SN 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 1.5 TB of 3DS Load Reduced DIMM (3DS LRDIMM), Load
Reduced DIMM (LRDIMM), 3DS Registered DIMM (3DS RDIMM), Registered DIMM (RDIMM)
DDR4 (288-pin), and NVDIMM ECC 2666/2400/2133 MHz memory modules in 12 slots.
Populating the DIMM slots with pairs of memory modules of the same type, speed and size
will result in interleaved memory, which improves performance.
Notes: 1. Unbalanced memory confi guration decreases memory performance and is
not recommended for Supermicro motherboards. 2. Be sure to use memory modules of
the same type and speed on the motherboard. Mixing of memory modules of different
types and speeds is not allowed. 3. 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. 4. Memory speed is dependent on the type of processors
used in your system.
Type
RDIMM
RDIMM
RDIMM
RDIMM
RDIMM 3Ds
RDIMM 3Ds
LRDIMM
LRDIMM 3Ds
DDR4 Memory Support (for 1-Slot Per-Channel Confi guration)
Speed (MT/s); Voltage (V); Slots per Channel (SPC) and DIMMs per Channel (DPC)
Ranks
DIMM Capacity
Per
(GB)
DIMM
and Data
Width
4 Gb 8 Gb
SRx4 8 GB 16 GB
SRx8 4 GB 8 GB
DRx8 8 GB 16 GB
DRx4 16 GB 32 GB
QRX4 N/A 2H-64GB
8RX4 N/A 4H-128GB
QRx4 32 GB 64 GB
QRX4 N/A 2H-64GB
8Rx4 N/A 4H-128 GB
31
Chapter 2: Installation
1 Slot per Channel
1DPC (1-DIMM per Channel)
1.2 V
2666
2666
2666
2666
2666
2666
2666
2666
2666