8 M em o r y Ri s e r B o a rd Rep l a c em e n tw w w. d e l l . c o m | s u p p o r t . d e l l . c o mSystem MemoryYour computer supports dual-channel Rambus dynamic random-accessmemory (RDRAM) Rambus in-line memory modules (RIMMs) in 64-,128-, 256-, and 512-megabyte (MB) capacities. See "System MemoryInstallation Guidelines" for instructions you must follow when installingmemory modules.To locate the memory sockets on the system board, see "System BoardMemory Components." To locate the memory sockets on the optionalmemory riser boards, see "Memory Riser Board Components."To reach the maximum 4-gigabyte (GB) memory total, you must install theoptional memory riser boards and use eight 512-MB modules that each havea maximum of 16 memory devices. See "Memory Module Label" for thelocation of the label on a module that identifies the number of memorydevices it contains. You can also determine the number of memory devicesinstalled through the System Memory option in system setup.NOTE: The computer does not support RIMMs with six memory devices.NOTE: The amount of memory available under Microsoft® Windows NT ®and Windows® 2000 will be slightly less than 4 GB, depending on the systemconfiguration.NOTE: The optional memory riser boards only support PC800 memorymodules.