Memory Support And Installation - Supermicro X11DPS-RE User 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 X11DPS-RE motherboard supports up to 6TB of LRDIMM/RDIMM/NVDIMM DDR4 ECC
2933*/2666/2400/2133 MHz memory in 24 memory slots (*Note below). It also supports up
to 9TB memory with DCPMM modules installed based on the DCPMM population table on
page 38.
Notes: 1. 2933 MHz memory is supported by 2nd Generation Intel Xeon Scalable-SP
(82xx/62xx series) processors only. 2. 16Gb-based memory modules are supported
by 2nd Gen Intel Xeon Scalable-SP processors only.
Memory Installation Sequence
Memory modules for this motherboards 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, 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.
3. Populating memory slots with a pair of DIMM modules of the same type and size will
result in interleaved memory, which will improve memory performance.
33
Chapter 2: Installation