NEC POWERMATE ES 5200 - SERVICE, Service Manual

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System Board 4-5
DIMM Sockets
The system board has two, 168-pin, gold-plated DIMM sockets (locations are
shown on the figure at the beginning of this section). The sockets support up to
512 MB of high-speed SDRAM memory. The sockets support DIMM modules
in 32-, 64-, 128-, and 256-MB 66-MHz and 100-MHz non-ECC memory
configurations.
Use these guidelines when selecting DIMMS:
„
DIMMs can be installed in one, or two sockets
„
DIMM size can vary between sockets
„
DIMM speed must match the processor bus speed (66 MHz or 100 MHz)
„
Single- and double-sided DIMMs can be mixed.
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.”
To remove or install a DIMM, see Section 3, “Disassembly and Reassembly.”
Supported DIMMs
DIMM Size Non-ECC Configuration
32 MB 4 Mbit x 64
64 MB 8 Mbit x 64
128 MB 16 Mbit x 64
256 MB 32 Mbit x 64
Sample DIMM Upgrade Paths*
Total Memory DIMM 1 DIMM 2
32 MB 32 MB
64 MB 32 MB 32 MB
64 MB 64 MB
128 MB 64 MB 64 MB
128 MB 128 MB
256 MB 128 MB 128 MB
256 MB 256 MB
512 MB 256 MB 256 MB
*The information in this table shows sample DIMM upgrade paths. It does not represent every
combination of DIMMs supported in the system.