Brief description of mainboard
Installing/removing main memory
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 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 PC2-5300U or PC2-6400U speci
fi
cation.
If you use more than one memory module, make sure to distribute the
memory modules over both memory channels. By doing this you use the
performance advantages of the dual-channel mode.
Maximum system performance is achieved when identical memory modules
are used in Channel A and Channel B.
To simplify equipping, the slots are colour coded. When inserting the memory
modules, start with the slot furthest away from the processor (slot 4).
With a memory con
fi
guration of 4 GB the visible and usable main memory can
be reduced to 3.5 GB (depending on the system con
fi
guration).
More than 4 GB of main memory can only be used with a suitable operating system.
Channel A
Channel B
Channel A
Channel B
1
2
3
4
Number of inserted memory modules
slot to be used
1
2
3
4
Channel A, slot 1
x
Channel B, slot 2
x
x
Channel A, slot 3
x
x
x
Channel B, slot 4
x
x
x
x
The installation/removal is described in the "Basic information on mainboard" manual.
4 - English
A26361-D2721-Z110-1-7419, edition 3