Dell XPS manual DDR Memory Overview, Memory Installation Guidelines

w w w . d e l l . c o m s u p p o r t . d e l l . c o m

DDR Memory Overview

DDR memory modules should be installed in pairs of matched memory size. This means that if you purchased your computer with 256 MB of memory installed and you want to add another 256 MB of memory, you must 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.

The recommended memory configurations are:

•A pair of matched memory modules installed in connectors DIMM1 and DIMM2 or

•A pair of matched memory modules installed in connectors DIMM1 and DIMM2 and another matched pair installed in connectors DIMM3 and DIMM4

Additional memory recommendations include:

•Do not install ECC memory modules.

•Be sure to install a single memory module in DIMM 1 or the connector closest to the processor before you install modules in the other connectors.

Memory Installation Guidelines

matched pair of memory modules in connectors DIMM3 and DIMM4

matched pair of memory modules in connectors DIMM1 and DIMM2

NOTICE: If you remove your original memory modules from the computer during a memory upgrade, keep them separate from any new modules that you may have, even if you purchased the new modules from Dell. You should install your original memory modules in pairs either in connectors DIMM1 and DIMM2 or connectors DIMM3 and DIMM4. If possible, do not pair an original memory module with a new memory module. Otherwise, your computer may not function at optimal performance.

NOTE: Memory purchased from Dell is covered under your computer warranty.

74

Removing and Installing Parts