Memory Support And Installation - Supermicro X11DSF-E User Manual

Super X11DSF-E User's Manual

2.4 Memory Support and Installation

Note: Check the Supermicro website for recommended memory. Exercise extreme
care when installing or removing DIMM modules to prevent any damage.
Memory Support
The X11DSF-E supports up to 3TB of 3DS LRDIMM/LRDIMM/3DS RDIMM/RDIMM/NV-DIMM
DDR4 ECC 2666/2400/2133 MHz memory in 24 memory slots. 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.
Memory Installation Sequence
Memory modules for this motherboard are populated using the "Fill First" method. The blue
memory slot of each channel is considered the "first DIMM module" of the channel, and the
black slot, the second module of the channel. When installing memory modules, be sure to
populate the blue memory slots first and then populate the black slots. To maximize memory
capacity and performance, please populate all DIMM slots on the motherboard, including all
blue slots and black slots.
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 on the same motherboard will result in reduced
memory performance.
DDR4 Memory Support (for 2-Slot Per-Channel Configuration)
Ranks Per DIMM and
Type
Data Width
RDIMM SRx4
RDIMM SRx8
RDIMM
DRx8
RDIMM DRx4
RDIMM 3Ds QRX4
RDIMM 3Ds
8RX4
LRDIMM QRx4
QRX4
LRDIMM
3Ds
8Rx4
Speed (MT/s); Voltage (V); Slots per Channel
DIMM Capacity (GB)
1DPC (1-DIMM per
4 Gb 8 Gb
8 GB 16 GB
4 GB 8 GB
8 GB 16 GB
16 GB 32 GB
N/A 2H-64GB
N/A 4H-128GB
32 GB 64 GB
N/A 2H-64GB
N/A 4H-128 GB
32
(SPC) and DIMMs per Channel (DPC)
2 Slots per Channel
2DPC (2-DIMM per Channel)
Channel)
1.2 V 1.2 V
2666 2666
2666 2666
2666 2666
2666 2666
2666 2666
2666 2666
2666 2666
2666 2666
2666 2666