Supermicro SuperServer SYS-121H-TNR - 3.4 Memory Support and Installation

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Chapter 3: Maintenance and Component Installation
Memory Support
This motherboard supports up to 8TB of 3DS RDIMM/RDIMM DDR5 (288-pin) memory with
speeds up to 4800MT/s. DDR5 memory supports up 4800 MT/s, and it supports up to 4400
MT/s in 32-DIMM conguration. Memory speed/capacity support depends on the processors
used in the system. To enhance memory performance, do not mix memory modules of di󰀨erent
speeds and sizes. Please follow all memory installation instructions given below.
3.4 Memory Support and Installation
Note: Check the Supermicro website for recommended memory modules.
Important: Exercise extreme care when installing or removing memory modules to
prevent any possible damage.
DDR5 Memory Support for 4th Gen Intel Xeon Scalable Processors
DDR5 Memory Support for the 4th Generation Intel® Xeon® Scalable Processors
Processors-SP
Type
Ranks Per
DIMM and Data
Width (Stack)
DIMM Capacity (GB)
Speed (MT/s)
One DIMM per
Channel
1
Two DIMMs
per Channel
Memory
Density
16 Gb
Memory
Density
24Gb
2
1.1 Volts
RDIMM
SRx8 (RC D) 16GB 24GB
4800* 4400*
SRx4 (RC C) 32GB 48GB
SRx4 (RC F) 9x4 32GB NA
DRx8 (RC E) 32GB 48GB
DRx4 (RC A) 64GB 96GB
DRx4 (RC B) 9x4 64GB NA
RDIMM 3DS (4R/8R) x4 (RC A)
2H-128 GB
4H-256 GB
NA
*Memory speed and capacity support depends on the processors used in the system.
Note 1: 1DPC applies to 1SPC or 2SPC implementations (SPC - sockets per channel).
Note 2: 24Gb XCC only with limited congs: 1DPC all DIMM types, 2DPC 96GB only. Only 8 and 16 DIMM
congs, no failbacks. 25 @ PLR1 4S/8S later in 2023.