Fujitsu PRIMERGY CX400 M1 System Configurator And Order-Information Manual page 18

Memory Configuration PRIMERGY CX25y0 M1/M2
Each CPU offers 8 Slots for DDR4 Memory Modules organised in 2 Banks and 4 Channels.
Depending on the amount of memory configured you can decide between 2 basic modes of operation (see explanation below).
There are 2 different kinds of DDR4 Memory Modules available: RDIMM and LRDIMM
RDIMM / LRDIMM offer different functionality. Mix of RDIMM / LRDIMM is not alloved.
Mode
SDDC (chipkill) support
Independant Channel Mode 1, 2 or 3 Modules per Bank
Performance Mode
*) For the delivery ex works the system will be prepared with dedicated BIOS setting.
Capacity
Min. Memory per CPU
Max. Memory per CPU
Max. Memory per System 16 Modules / System
Memory-Speed:
Max. DDR4 memory speed depends on the memory configuration on one memory channel and the speed of the CPU
The memory channel with the lowest speed defines the speed of all CPU channels in the system
Mem. Speed provided by CPU
Voltage setting (BIOS)
CPU with 2400MHz DDR4 Bus
CPU with 2133MHz DDR4 Bus
CPU with 1866MHz DDR4 Bus
CPU with 1600MHz DDR4 Bus
1R - Single Rank
2R - Dual Rank
4R - Quad Rank
8R - Octal Rank
1DPC = 1 DIMM per Channel
2DPC = 2 DIMM per Channel
3DPC = 3 DIMM per Channel
Configuration hints:
- The memory sockets on the systemboard offer a color coding:
Bank I black sockets
Bank II blue sockets
Bank III green sockets
- A so called Bank consits of 1 memory module on every Channel available on one CPU (examples see below)
Bank I on CPU 1/2
Bank II on CPU 1/2
Bank III on CPU 1/2
- See below and next page for a detailed descriptions of the memory configuration supported.
Configuration
any
4 identical Modules / Bank
Configuration
1 Module / CPU
8 Modules / CPU
Real maximum memory-bus speed depending on CPU type, memory configuration (DPC) and voltage setting (BIOS)
CX25y0 M1
RDIMM LRDIMM
2133MHz 2133MHz
1.2V
1 2 3 1
DPC DPC DPC DPC DPC DPC
- - - -
2133 2133 - 2133 2133 -
1866 1866 - 1866 1866 -
1600 1600 - 1600 1600 -
up to 4 memory modules connected to Channel A - H on the 1st/2nd CPU
up to 4 memory modules connected to Channel A - E on the 1st/2nd CPU
up to 4 memory modules connected to Channel A - E on the 1st/2nd CPU
(can not be populated by UDIMM or 4R RDIMM memory modules)
Fujitsu Technology Solutions x86 PRIMERGY Server
System configurator and order-information guide
PRIMERGY CX400 M1
Application
RDIMM
RDIMM
LRDIMM
x8 x4
no yes detect multi-bit errors
yes yes offers max. flexibility, upgradeability, capacity
yes yes offers maximum performance and capacity
CX25y0 M1
RDIMM LRDIMM RDIMM
1x8GB 1x 32GB 1x8GB
8x32GB 8x 64GB 8x64GB*
512GB 1024GB 1024GB*
*planned
CX25y0 M2
RDIMM
2400MHz
1.2V 1.2V
2 3 1 2 3
DPC DPC DPC DPC DPC DPC
- - 2400 2400 -
2133 2133 -
1866 1866 -
- - -
CX25y0 M2
LRDIMM Notes
1x64GB with one CPU
8x64GB with one CPU
with
1024GB
LRDIMM
2400MHz
1.2V
1 2 3
2400 2400 -
2133 2133 -
1866 1866 -
- - -
Status 2016-10-31
two CPU
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