
FusionServer 2288 V5 Server
Technical White Paper
5 Hardware Description
2022-11-11
27
The total memory capacity cannot exceed the maximum memory capacity supported by the
CPUs.
⚫
to determine the capacity type of a single memory
module.
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The maximum number of DIMMs supported by a server varies depending on the CPU
type, memory type, rank quantity, and operating voltage.
Each memory channel supports a maximum of 8 ranks. The number of DIMMs supported by each
channel varies depending on the number of ranks supported by each channel:
Number of DIMMs supported by each channel ≤ Number of ranks supported by each memory
channel/Number of ranks supported by each DIMM
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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 5-6
DDR4 DIMM specifications
Parameters
Specifications
Maximum capacity per DDR4
DIMM (GB)
16
32
64
Rated speed (MT/s)
2933
2933
2666
Rank
Single rank
Dual rank
Quad rank
Operating voltage (V)
1.2
1.2
1.2
Maximum number of DDR4
DIMMs in a server
a
16
16
16
Maximum DDR4 memory
capacity of the server (GB)
b
256
512
1024
Maximum
operating speed
(MT/s)
1DPC
c
2933
d
2933
d
2666
2DPC
2666
2666
2666
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a: The maximum number of DDR4 memory modules is based on dual-processor
configuration. The value is halved for a server with only one processor.
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b: The maximum DDR4 memory capacity varies depending on the processor type. The
value listed in this table is based on the assumption that DIMMs are fully configured.
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c: DPC (DIMM per channel) indicates the number of DIMMs per channel.
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d: If the Cascade Lake processor is used, the maximum operating speed of a DIMM can
reach 2933 MT/s. If the Skylake processor is used, the maximum operating speed of a
DIMM can reach 2666 MT/s only. Different CPUs possess different specifications, For
details about the CPU parameters, see the Intel official website.
⚫
The information listed in this table is for reference only. For details, consult the local