NEC PowerMate CT manual Processor Socket, Rimm Sockets, Sample Rimm Upgrade Paths, Total Memory

Processor Socket

The processor installs in a 370-pin Socket 370 on the system board. The processor is held in place in the socket by a locking lever attached to the socket and a removable retention clip. The retention clip anchors both the processor and the processor heat sink to the Socket 370.

To remove or install a processor, see Section 3, “Disassembly and Reassembly.”

RIMM Sockets

Memory upgrades are installed into two memory module sockets on the system board. The sockets support up to 512 MB of high-speed memory. The system supports 184-pin, 800-MHz RDRAM modules in 64-, 128-, and 256-MB unbuffered memory configurations.

Use the following guidelines for selecting and installing RIMM modules:

!RIMM modules can be installed in one or two sockets

!if installing a RIMM module in only one socket, a continuity module must be installed in the second socket

Ensure that both RIMM sockets are filled with two RIMM modules or one RIMM module and one continuity module. If both sockets are not filled, system memory won’t work well or at all.

!the size of the RIMMs can vary between sockets but the memory operates at the speed of the slowest module

!for sample memory configurations, see the following table, “Sample RIMM Upgrade Paths”

!to determine the memory you need for a memory upgrade, see “Checking System Memory” later in this section

!to locate memory module sockets on the system board, see the previous figure, “System Board Upgrade Sockets.”

!to remove or install a RIMM module, see Section 3, “Disassembly and Reassembly.”

Sample RIMM Upgrade Paths

Total
Memory	RIMM 1	RIMM 2
64 MB	64 MB	Continuity Module
128 MB	64 MB	64 MB
128 MB	128 MB	Continuity Module
256 MB	128 MB	128 MB
256 MB	256 MB	Continuity Module
512 MB	256 MB	256 MB

The information in this table shows sample RIMM upgrade paths. It does not represent every combination of RIMMs supported in the system.

4-6 System Board