FUJITSU Mainboard D1931 - Manual (Page 32)

Upgrading main memory
22 - English A26361-D1931-Z120-1-7419, Edition 1
Upgrading main memory
Technical data
Technology: DDR 333 or DDR 400 unbuffered 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 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 only use unbuffered 2,5 V memory modules. Buffered memory modules are not
supported.
DDR-DRAM memory modules must meet the PC2700 or PC3200 specification.
i
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 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