Dell XPS /Dimension Gen 2 Service Manual - Page 10

Back to Contents Page Removing and Installing Parts Dell™ Dimension™ XPS Service Manual Memory AGP Cards Processor Airflow Shroud System Board Front Panel Battery PCI Cards Drives Processor Power Supply Drive Door 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." NOTE: DDR 333 memory operates at 320-MHz when used with an 800-MHz front-side bus processor. 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: l A pair of matched memory modules installed in connectors DIMM1 and DIMM2 or l 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: l Do not install ECC memory modules. l 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