Upgrading main memory
22 - English A26361-D1562-Z121-1-6319
Upgrading main memory
Technical data
Technology: DDR 266, DDR 333 or DDR 400 unbuffered DIMM modules
184-Pin; 2.5 V; 64 Bit, no ECC
Size: 128 Mbytes up to 4 Gbyte DDR 266 SDRAM
128 Mbytes up to Gbyte DDR 333 SDRAM
128 Mbytes up to 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-DIMM memory modules must meet the PC2100, PC2700 or PC3200
specification.
The mainboard has two memory channels (channel A and channel B) with two slots each
(slot 1 and 3 or slot 2 and 4).
The maximum system performance is available when identical memory modules (same
order number, same manufacturer, same size, memory density) are used in a memory
slot 1 and 2 or memory slot 3 and 4.
slot 1
slot 3
slot 4
slot 2
Channel B
Channel A
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
If you use more than one memory module, then make sure to distribute the memory modules over
both memory channels (see table). By doing this you use the performance advantages of the dual-
channel mode.
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