FusionServer XH321C V6 Liquid-cooled Server Node
Technical White Paper
5 Hardware Description
2022-09-10
24
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A server must use DDR4 memory modules of the same part number (P/N code), and the
memory speed is the minimum value of the following items:
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Memory speed supported by a CPU
⚫
Maximum operating speed of a memory module
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The DDR4 DIMMs of different types (RDIMM and LRDIMM) and specifications
(capacity, bit width, rank, and height) cannot be used together.
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For details about component options, consult the local sales representatives.
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The memory can be used with the third-generation Intel
®
Xeon
®
Scalable Ice Lake
processors. The maximum memory capacity supported by all processor models is the
same.
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Total memory capacity = Total capacity of all DDR4 memory modules
The total memory capacity cannot exceed the maximum memory capacity supported by the
CPUs.
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For details about the capacity type of a single memory module, see "Search Parts" in the
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The maximum number of memory modules supported depends on the memory type and
rank quantity.
Each memory channel supports a maximum of 8 ranks. The number of memory modules supported by
each channel varies depending on the number of ranks supported by each channel:
Number of memory modules supported by each channel ≤ Number of ranks supported by each memory
channel/Number of ranks supported by each memory module
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A memory channel supports more than eight ranks for LRDIMMs.
A quad-rank LRDIMM generates the same electrical load as a single-rank RDIMM on a memory bus.
Table 5-4
DDR4 memory specifications
Parameter
Specifications
Maximum capacity per DDR4 memory module (GB)
128
Rated speed (MT/s)
3200
Operating voltage (V)
1.2
Maximum number of DDR4 memory modules in a node
a
16
Maximum DDR4 memory capacity of the node (GB)
2048
Maximum operating
speed (MT/s)
1DPC
b
3200
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a: The maximum number of DDR4 memory modules is based on dual-processor
