Fujitsu PRIMERGY DX920 S3 Instruction Manual page 11

Memory Configuration PRIMERGY BX920 S3
Each CPU offers 6 Slots for DDR3 Memory Modules organised in 2 Banks and 3 Channels.
If you need more than 6 Slots you have to configure the 2nd CPU.
Depending on the amount of memory configured you can decide between 4 basic modes of operation (see explanation below).
There are 3 different kinds of DDR3 Memory Modules available: UDIMM / RDIMM and LRDIMM
UDIMM / RDIMM / LRDIMM offer different functionality. Mix of UDIMM / RDIMM / LRDIMM is not alloved.
If 1.5V and 1.35V DIMMs are mixed, the DIMMs will run at 1.5V
Mode
SDDC (chipkill) support
Independant Channel
Mode
Mirrored Channel Mode *) 2 identical Modules / Bank
Performance Mode
Rank Sparing 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 8/12 Modules / System
Memory-Speed:
Max. DDR3 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 1600MHz DDR3 Bus
CPU with 1333MHz DDR3 Bus
CPU with 1066MHz DDR3 Bus
1R - Single Rank
2R - Dual Rank
4R - Quad 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
- See below and next page for a detailed descriptions of the memory configuration supported.
Configuration
any
1, 2 or 3 Modules per Bank
3 identical Modules / Bank
min. 2 Ranks / Channel
Configuration UDIMM
1 Module / CPU
4/6 Modules / CPU
Real maximum memory-bus speed depending on CPU type, memory configuration (DPC)
UDIMM 1600MHz
1.5V [default] 1.35V
1 2 3 1
DPC DPC DPC DPC DPC DPC DPC DPC DPC DPC DPC DPC DPC DPC DPC DPC DPC
1333 - 1066
1333 1066
1600 - 1333
1333 1333 - 1066 1066
1066 1066 - 1066 1066
on special release
as soon as available
up to 3 memory modules connected to Channel A - F on the 1st/2nd CPU
up to 3 memory modules connected to Channel A - F on the 1st/2nd CPU
Fujitsu PRIMERGY Server
System configurator and order-information guide
PRIMERGY BX920 S3
RDIMM
UDIMM RDIMM
LRDIMM
x8 x8
x4
no no yes
yes yes yes
no no yes
yes yes yes
no no yes
RDIMM LRDIMM
1x2GB 1x4GB 1x 16GB
6x4GB 6x16GB 6x 32GB
48GB 96GB 384GB
and voltage setting (BIOS)
RDIMM 1600MHz
1.5V [default]
2 3 1 2 3 1
- -
1600 1600 1333
- -
- 1333 1333 - 1333
1066
- 1066 - 1066
Status: 2013-12-30
Application
detect multi-bit errors
offers max. flexibility, upgradeability, capacity
use UDIMM modules for lowest cost
offers maximum security
offers maximum performance and capacity
balances security and capacity
Notes
with one CPU
with one CPU
if second CPU is configured
LRDIMM 1333MHz
1.35V 1.5V [default]
2 3 1 2 3
- -
1333 1333 1333
- -
1333 - 1333 1333 -
1066 - 1066 1066 -
1.35V
1 2 3
DPC
-
1066 1066
-
1066 1066 -
1066 1066 -
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