Installing System Components 67
System Memory
The four memory module sockets are located on the system board adjacent to the power supply
and can accommodate from 512 MB to 4 GB of unbuffered ECC PC-3200 (DDR400) memory. See
Figure 6-1 for the location of the memory module sockets.
You can upgrade the system memory by installing combinations of 256-, 512-MB, and 1-GB
unbuffered memory modules. If you receive an error message stating that maximum memory has
been exceeded, see "Indicators, Messages, and Codes" for more information. You can purchase
memory upgrade kits from Dell.
NOTE: The memory modules must be PC-3200 compliant.
Memory Module Installation Guidelines
The memory module sockets are arranged in banks (1 and 2) on two channels (A and B). See
Figure A-3 for the location of the memory module sockets. The memory module banks must be
installed in identical pairs.
The memory module banks are identified as follows:
• Bank 1: DIMM1_A and DIMM1_B
• Bank 2: DIMM2_A and DIMM2_B
For example, if socket DIMM1_A contains a 256-MB memory module, then socket DIMM1_B
must contain a 256-MB memory module.
Table 6-1 shows examples of different memory configurations.
• If only one memory module is installed, it must be installed in the DIMM1_A socket.
• A bank must contain identical memory modules.
• Install the memory modules in bank 1 (DIMM1_
x
) before installing memory modules in
bank 2 (DIMM2_
x
).
• Installing three memory modules is not supported.
Table 6-1. Sample Memory Module Configurations
Total
Memory
DIMM1_A DIMM2_A DIMM1_B DIMM2_B
512 MB 256 MB None 256 MB None
1 GB 256 MB 256 MB 256 MB 256 MB
1 GB 512 MB None 512 MB None
1.5 GB 512 MB 256 MB 512 MB 256 MB
2 GB 1 GB None 1 GB None
2 GB 512 MB 512 MB 512 MB 512 MB
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