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Figure 58. Memory socket location
Table 59. Supported memory matrix
DIMM type
Rank
RDIMM
1Rx8, 1Rx4
2Rx8, 2Rx4
NOTE:
Mixing of memory module capacities in a system is not supported.
General memory module installation guidelines
To ensure optimal performance of your system, observe the following general guidelines when configuring your system memory.
If your system's memory configuration fails to observe these guidelines, your system might not boot, stop responding during
memory configuration, or operate with reduced memory.
The memory bus may operate at speeds of 4800 MT/s, or 4400 MT/s depending on the following factors:
● System profile selected (for example, Performance, Performance Per Watt Optimized (OS), or Custom [can be run at high
speed or lower])
● Maximum supported DIMM speed of the processors
● Maximum supported speed of the DIMMs
NOTE:
MT/s indicates DIMM speed in MegaTransfers per second.
The system supports Flexible Memory Configuration, enabling the system to be configured and run in any valid chipset
architectural configuration. The following are the recommended guidelines for installing memory modules:
● All DIMMs must be DDR5.
● Mixing of non-3DS and 3DS RDIMMs is not allowed.
● 3DS is a DRAM technology used to manufacture the highest capacity DIMMs. Refer to your DIMM documentation for
additional details.
● x4 and x8 DRAM based memory modules cannot be mixed.
● If memory modules with different speeds are installed, they operate at the speed of the slowest installed memory module(s).
● Populate memory module sockets only if a processor is installed.
○ For single-processor systems, sockets A1 to A8 are available.
○ For dual-processor systems, sockets A1 to A8 and sockets B1 to B8 are available.
○ A minimum of 1 DIMM must be populated for each installed processor.
88
Installing and removing system components
Capacity
DIMM rated voltage and
speed
16 GB, 32 GB, 64 GB,
DDR5 (1.1V), 4800 MT/s
128 GB, 256 GB
DIMMs per Channel
(DPC)
4800 MT/s
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