Main Memory - Fujitsu D2239 Technical Manual

Main memory

3.2 Main memory
The system board supports up to 8 Gbyte main memory. 4 slots (2 memory
banks with 2 modules) are available for the main memory. Each memory bank
can be populated with 512 Mbyte, 1 Gbyte or 2 Gbyte unbuffered DDR2
memory modules.
Module population
Figure 2: Main memory
– If the memory modules are populated in pairs, each pair must consist of
identical memory modules (2-way interleaved mode).
– The module capacity between pairs can differ: pair 2A/2B can be populated
with two 512 Mbyte memory modules and pair 1A/1B with two 1 Gbyte
memory modules.
Following table shows the mandatory population order:
single
channel
dual channel
16
DIMM 1A
DIMM 2A
DIMM 1B
DIMM 2B
DIMM_1A DIMM_2A
populated
empty populated
empty
empty
populated
empty populated
populated populated
Technical Manual
DIMM_1B
empty empty
empty
empty populated
empty empty
empty populated
empty
populated
Features
DIMM_2B
empty
empty
empty
populated
empty
populated
populated
D2239 (TX150 S4)