Dell GX280DT - GX280 Desktop Computer User Manual

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Contents

Back to Contents PageMemoryDell™ OptiPlex™ GX280 Systems User's GuideDDR2 Memory OverviewAddressing Memory With 4-GB ConfigurationsReplacing/Adding Additional MemoryFor information on the type of memory supported by your computer, look under "Memory" in "Specifications."DDR2 Memory Overviewl Dual-channel DDR2 memory modules should be installed in pairs of matched memory size, speed, and technology. If the DDR2 memory modules are notinstalled in matched pairs, the computer will continue to operate, but with a slight reduction in performance. See the label in the upper-right corner ofthe module to determine the module's capacity.The recommended memory configurations are:¡ A memory module installed in connector DIMM1or¡ A pair of matched memory modules installed in connectors DIMM1 and DIMM2or¡ A pair of matched memory modules installed in connectors DIMM1 and DIMM2 and another matched pair installed in connectors DIMM3 and DIMM4Be sure to install a single memory module in DIMM1, the connector closest to the processor, before you install modules in the other connectors.Addressing Memory With 4-GB ConfigurationsThe small-desktop, desktop, small mini-tower, and mini-tower computers support a maximum of 4 GB of memory when you use four 1-GB DIMMs. Currentoperating systems, such as Microsoft® Windows® 2000 and Windows XP, can only use a maximum of 4 GB of address space; however, the amount of memoryavailable to the operating system is slightly less than 4 GB. Certain components within the computer require address space in the 4-GB range. Any addressNOTICE: Before you install new memory modules, download the most recent BIOS for your computer from the Dell Support website atsupport.dell.com.NOTE: Always install DDR2 memory modules in the order indicated on the system board.NOTICE: Do not install ECC memory modules. Doing so may cause the system not to boot or affect performance.NOTE: The small form-factor computer has two slots which are considered an interleaved pair.A matched pair of memory modules in connectors DIMM1 and DIMM2 (white securing clips)B matched pair of memory modules in connectors DIMM3 and DIMM4 (black securing clips)