Memory Support And Installation; Memory Support; Memory Installation Sequence; General Memory Population Requirements - Supermicro X11DPX-T User Manual

Super X11DPX-T 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 X11DPX-T supports up to 4TB of 3DS Load Reduced DIMM (3DS LRDIMM), 3DS
Registered DIMM (3DS RDIMM), or up to 2TB of Load Registered DIMM (LRDIMM), with
speeds of 2933*/2666/2400/2133/1866/1600/1333 MHz modules in 16 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.
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. Memory
speed is dependent on the type of processors used in your system. 4. Populating DDR4
memory modules in a two-DIMMs per-channel (2DPC) configuration on this motherboard
will affect memory bandwidth and performance. 5. Unbalanced memory configuration is
not recommended. 6. Support for 2933MHz memory is dependent on the CPU SKU. 7.
The memory capacity support will differ according to the processor SKUs. 8. 16Gb-based
memory modules are supported by 2nd Gen Intel Xeon Scalable-SP processors only.

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.

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.
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