Brief description of mainbo ard
Installing/removing main m emory
Technical data
Technology
DDR2 667 / DDR2 800 unbuffered DIMM modules 240 pin; 1.8 V;
64 Bit, no ECC
Total size
128 Mbytes to 8 Gbytes DDR2
Module size 128, 256, 512, 1024 or 2048 MBytes per module
A current list of the memory m
odules recommended for this mainboard is available
on the Internet at: "
www.fuj
itsu-siemens.com/ma inboards".
At least one memory module mu
st be installed. Memory modules with different
memory capacities can be com
bined.
You may use only unbuffered
1.8 V memory modules without ECC.
DDR2-memory modules must
meet th e PC2-5300U or PC2-6400U specification.
If you use more than one me
mory module, make sure to distribute the
memory modules over bot
h m emory channels. By doing this you use the
performance advantage
s of the dual-channel mode.
Maxim um system perform
ance is achieve d when identical memory modules
are used in Channel A and
Channel B.
To simplify equipping
, the slots are co lour coded. When inserting the memory
modules, start with th
e slot furthe st away from the processor (slot 4).
With a memory configura
tion of 4 GB the visible and usable main memory can
be reduced to 3.5 GB (de
pending on the system configuration).
More than 4 GB of main me
mory can only be used with a suitable operating system.
Channel A
Channel B
Channel A
Channel B
1
2
3
4
Number of inserted mem ory m odules
slot to be used 1 2 3 4
Channel A, slot 1
x
Channel B, slot 2
xx
Channel A, slot 3
xxx
Channel B, slot 4
xxxx
The installation/re
moval is described in the "Basic information on mainboard" manual.
4 - English A26361-D2721-Z110-1-7419, edition 3
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