Rimm Installation Guidelines - Dell Precision 420 Upgrade Manual

1-4 System Memory Upgrade
Figure 1-1 shows the RIMMs and RIMM sockets.
Figure 1-1. RIMMs and RIMM Sockets

RIMM Installation Guidelines

When you add RIMMs, you must install them in matched pairs (pairs of identical
capacity). If only one pair of RIMMs is installed, they must occupy sockets RIMMB_1
and RIMMA_2, and you must install continuity RIMMs (CRIMMs) in sockets
RIMMB_3 and RIMMA_4.
Table 1-1 lists sample memory configurations.
Table 1-1. Sample RIMM Configuration Options
Total
Desired
RIMMB_1
Memory
128 MB 64 MB
256 MB 64 MB
256 MB 128 MB
Socket RIMMB_1
Socket RIMMA_2
Socket RIMMB_3
Socket RIMMA_4
RIMM Socket
RIMMA_2 RIMMB_3
64 MB CRIMM
64 MB 64 MB
128 MB CRIMM
top of system
RIMMA_4
CRIMM
64 MB
CRIMM