xFusion Digital Technologies FusionServer 2488H V7, Manual

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● The calculation formula of total memory capacity supported is as follows: the
total memory capacity equals the capacity sum of all DDR5 memory modules.
● For details about the capacity type of a single memory module, see "Search
Parts" in the
Compatibility Checker .
● The maximum number of memory modules supported depends on the CPU
type, memory module type, and number of ranks.
NO TE
Each RDIMM channel supports a maximum of 4 ranks and each LRDIMM 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
Table 5-6 DDR5 memory specifications
Parameter Specifications
Capacity per DDR5
DIMM (GB) 16 32 64 128 256
Type RDIMM RDIMM RDIMM RDIMM-3
DS RDIMM-3
DS
Rated speed (MT/s) 4800 4800 4800 4800 4800
Operating voltage (V) 1.1 1.1 1.1 1.1 1.1
Maximum number of
DDR5 DIMMs in a
server
a
64 64 64 64 64
Maximum DDR5
memory capacity of
the server (GB) 512 2048 4096 8192 16384
Actual
speed
(MT/s)
1DPC
b
4800 4800 4800 4800 4800
2DPC 4400 4400 4400 4400 4400
● a: The maximum number of DDR5 memory modules is based on 4-processor
configuration. The number is halved for a server with two processors.
● b: DIMM per channel (DPC) indicates the number of memory modules per
channel.
● The information listed in this table is for reference only. For details, consult the
local sales representative.
5.4.1.4 Memory Module Installation Rules
Observe the following rules when configuring DDR5 memory modules:
● At least one DDR5 memory module must be configured if the server uses SPR
CPUs (excluding HBM CPUs).
FusionServer 2488H V7 Server
Technical White Paper
5 Hardware Description
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