The total memory capacity cannot exceed the maximum memory capacity
supported by the CPUs.
● Use the Computing Product Compatibility Checker to determine the
capacity type of a single DIMM.
● 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
Table 5-6 DDR4 memory
specications
Parameter Specications
Maximum capacity
per DDR4 DIMM
(GB)
16 16 32 32 64
Rated speed (MT/s) 2666 2933 2666 2933 2933
Rank Dual
rank
Dual
rank
Dual
rank
Dual
rank
Dual
rank
Operating voltage
(V)
1.2 1.2 1.2 1.2 1.2
Maximum number of
DDR4 DIMMs in a
server
a
12 12 12 12 12
Maximum DDR4
memory capacity of
the server (GB)
b
192 192 384 384 768
Maximu
m
operating
speed
(MT/s)
1DPC
c
2666
2933
d
2666
2933
d
2933
d
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