Dimm Sockets; Supported Dimms; Sample Dimm Upgrade Paths - NEC PowerMate Professional 9000E Series Service Manual

DIMM Sockets

The system board has four, 168-pin, gold-plated DIMM sockets. The sockets
support up to 1 GB of high-speed SDRAM memory. NEC provides DIMMs in
64-, 128-MB, and 256-MB 100-MHz memory configurations. DIMM modules:
T
can be installed in one, two, three, or four sockets
T
size can vary between sockets
T
run at 100 MHz
T
can be single- and double-sided.
For DIMM socket locations, see the figure in the previous section. See the
following tables for supported DIMMs and for sample DIMM upgrade paths. To
determine the memory needed for a memory upgrade, see "Checking System
Memory." Pin assignments for DIMM sockets are included in this section.
Total Memory DIMM Socket 1
64 MB
128 MB
192 MB
256 MB
320 MB
384 MB
448 MB
512 MB
576 MB
640 MB
704 MB
768 MB
832 MB
896 MB
1024 MB
4-6 System Board

Supported DIMMs

DIMM Size
64 MB
128 MB
256 MB

Sample DIMM Upgrade Paths

DIMM Socket 2
64 MB
128 MB
128 MB
256 MB
256 MB
256 MB
256 MB
256 MB
256 MB
256 MB
256 MB
256 MB
256 MB
256 MB
256 MB
ECC Configuration
8 MByte x 72
16 MByte x 72
32 MByte x 72
DIMM Socket 3
empty empty
empty empty
64 MB empty
empty empty
64 MB empty
128 MB empty
128 MB 64 MB
256 MB empty
256 MB 64 MB
256 MB 128 MB
256 MB 128 MB
256 MB 256 MB
256 MB 256 MB
256 MB 256 MB
256 MB 256 MB
DIMM Socket 4
empty
empty
empty
empty
empty
empty
empty
empty
empty
empty
64 MB
empty
64 MB
128 MB
256 MB