Upgrading main memory
22 - English A 26361-D1931-Z120-1-7419, Edition 1
Upgrading main memory
Technical data
Technology: DDR 333 or DDR 400 unbuff ered DIMM modules
184-Pin; 2.5 V; 64 Bit, no ECC
Size: 128 Mbytes to 4 Gbyte DDR 333 SDRAM
128 Mbytes to 4 Gbyte DDR 400 SDRAM
Granularity: 128, 256, 512 or 1024 Mbyte for one socket
● A current list of the mem ory 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 m odules with different memory capacities
can be combined.
!
You may only use unbuffered 2,5 V memory modules. Buffered mem ory modules are not
supported.
DDR-DRAM memory modules must meet the PC2700 or PC3200 specificat ion.
The mainboard has two memory channels (channel A and channel B) with two slots each
(slot 1 and 3 or slot 2 and 4).
If you use more than one memory module, then make sure to distri bute the memory
modules over both memory channels. By doing this you use the performance advant ages
of the dual-channel mode.
The maximum system performance is given when the same memory s ize 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 m ain 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