Dell Dimension 4700C - Manual (Page 63)

Removing and Installing Parts
63
Memory
You can increase your computer memory by installing memory modules on the system board.
Your computer supports DDR2 memory. For additional information on the type of memory
supported by your computer, see "Memory" on page 81.
DDR2 Memory Overview
If you are installing two DDR2 memory modules, you should install the modules as a pair, with
matched memory size and speed. If the DDR2 memory modules are not installed in a matched pair,
the computer will continue to operate, but with a slight reduction in performance. If you install a
mixed pair of DDR2 400-MHz (PC2-3200) and DDR2 533-MHz (PC2-4300) memory, the
modules function at the slowest speed installed. See the label on the module to determine the
module’s capacity.
NOTE:
Always install DDR2 memory modules in the order indicated on the system board.
NOTICE:
Do not install ECC memory modules.
The recommended memory configuration is a pair of matched memory modules installed in
DIMM connectors 1 and 2.
NOTE:
Memory purchased from Dell is covered under your computer warranty.
matched pair of memory modules
in DIMM connectors 1 and 2