Fujitsu primequest 2400E2 Design Manual page 41

2.2.2 Memory (6/7)
Conditions of Installing Different Memory Modules

16GB memory (8GB single-rank (*1) DIMM x 2) and 32GB memory (16GB dual-rank (*1) DIMM x
2) can be installed in the same partition.
Different types of memory modules other than the above combination cannot be installed
together in the same partition.
Different types of memory modules can be installed in a different partition on a different SB.
Partition#0
64GB
(32GB DIMM x 2)
PRIMEQUEST 2000 Series Design Guide
16GB
(8GB DIMM x 2)
(*1) Memory rank: A unit of data input and output by a memory controller from the DRAM
Partition#0
64GB
(32GB DIMM x 2)
chips on a DIMM
Memory access performance increases as the rank number increases.
40
Partition#1
32GB
(16GB DIMM x 2)
(8GB DIMM x 2)
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16GB