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Mainboard D2156
A26361-D2156-Z110-1-8N19, edition 2 English - 3
Installing/removing or replacing main memory
Technical data
Technology: DDR2 400 / DDR2 533 / DDR2 667 unbuffered DIMM modules
240-Pin; 1.8 V; 64 Bit, no ECC
Size: 256 MB to 4 GB DDR2
Granularity: 256, 512 or 1024 Mbyte for one socket
A current list of the memory modules recommended for this mainboard is available on the Internet
at: www.fujitsu-siemens.com/mainboards.
At least one memory module must be installed. Memory modules with different memory capacities
can be combined.
!
You may use only unbuffered 1.8 V memory modules without ECC.
DDR2-memory modules must meet the PC2-3200U, PC2-4200U or PC2-5300U
specification.
i
If you use more than one memory module, then make sure to distribute the memory
modules over both memory channels. By doing this you use the performance advantages
of the dual-channel mode.
The maximum system performance is given when the same memory size is used in
Channel A and Channel B.
To simplify equipping, the slots are colour coded.
With a memory configuration of 4 Gbytes the visible and usable main memory can be
reduced down to 3 Gbytes (depending on the system configuration).
Channel A
Channel B
slot 2
slot 1
slot 4
slot 3
Number of inserted memory modules
slot to be used
1 2 3 4
Channel A, slot 1
X X X X
Channel A, slot 3
X X
Channel B, slot 2
X X X
Channel B, slot 4
X
The installation/removal is described in the "Basic information on mainboard" manual.