Fujitsu Siemens Computers D1625, Техническое руководство, Страница: 75 / 127

Upgrading main memory
20 - English
A26361-D1627-Z120-1-6319
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.
The maximum system performance is only available when identical memory modules
(same order number, same manufacturer, same size, memory density) are used in a
memory channel (slot 1 and 2 or slot 3 and 4).
slot 1
slot 3
slot 4
slot 2
Channel A
Channel B
Memory clock pulse speed
The memory clock pulse speed is affected by the chipset and processor system bus. The table
shows the memory speed in dependence on the Processor System Bus.
System bus (MHz) DDR400 (MHz) DDR333 (MHz) DDR266 (MHz)
800 400 320 266
533 333 333 266
400 266 266 266