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Removing and Installing Parts 55
Memory
You can increase your computer memory by installing memory modules on the system board. For
information on the type of memory supported by your computer, see "Memory" on page 79.
NOTE: DDR 333 memory operates at 320 MHz when used with an 800-MHz front-side bus.
DDR Memory Overview
DDR memory modules should be installed in
pairs of matched memory size
. This means that if you
purchased your computer with 128 MB of memory installed and you want to add another 128 MB of
memory, you should install it in the appropriate connector. If the DDR memory modules are not installed in
matched pairs, the computer will continue to operate, but with a slight reduction in performance.
NOTE: Always install DDR memory modules in the order indicated on the system board.
NOTE: Your computer has two memory slots labeled DIMM3 and DIMM4.
The recommended memory configurations are:
• Install a pair of matched memory modules in connectors DIMM3 and DIMM4.
• Do not install ECC memory modules.
• If you install a mixed pair PC2700 (DDR 333-MHz) and PC3200 (DDR 400-MHz) memory, the
modules function at the slowest speed installed.
• Be sure to install a single memory module in DIMM3 or the connector closest to the processor before
you install modules in the other connector.
Memory Installation Guidelines
matched pair of memory modules
in connectors DIMM3 and DIMM4