5.4.1.3 Memory Compatibility
Observe the following rules when configuring DDR4 DIMMs:
NO TICE
● A server must use the same model of DDR4 DIMMs, and all the DIMMs operate at
the same speed, which is the smallest value of:
●
Memory speed supported by a processor
●
Maximum operating speed of a DIMM
● The DDR4 DIMMs of different types (RDIMM and LRDIMM) and specifications
(capacity, bit width, rank, and height) cannot be used together.
● Contact your local sales representative or use the
to
determine the components to be used.
●
The memory can be used with Intel
®
Xeon
®
Scalable Skylake and Cascade
Lake processors. The maximum memory capacity supported varies depending
on the processor model.
–
Skylake processors
▪
M processors: 1.5 TB/socket
▪
Other processors: 768 GB/socket
–
Cascade Lake processors
▪
L processors: 4.5 TB/socket
▪
M processors: 2 TB/socket
▪
Other processors: 1 TB/socket
●
The total memory capacity is the sum of the capacity of all DDR4 DIMMs.
NO TICE
The total memory capacity cannot exceed the maximum memory capacity
supported by the CPUs.
●
to determine the capacity type of a single
memory module.
●
The maximum number of DIMMs supported by a server varies depending on the
CPU type, memory type, rank quantity, and operating voltage.
NO TE
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
●
A memory channel supports more than eight ranks for LRDIMMs.
FusionServer 2488 V5 Server
Technical White Paper
5 Hardware Description
Issue 06 (2023-12-12)
Copyright © xFusion Digital Technologies Co., Ltd.
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