Installing System Components 81System MemoryThe four memory module sockets are located on the system board adjacent tothe power supply and can accommodate 512 MB to 8 GB of unbuffered ECCPC-5300/6400 (DDR2 667 or DDR 800) memory. See Figure 6-2 for thelocation of the memory module sockets.You can upgrade the system memory by installing combinations of 512-MB,1-GB, and 2-GB unbuffered memory modules. If you receive an error messagestating that maximum memory has been exceeded, see "System Messages" onpage 19 for more information. You can purchase memory upgrade kits fromDell.NOTE: The memory modules must be PC-5300/6400 compliant.Memory Module Installation GuidelinesThe memory module sockets are arranged in banks (1 and 2) on two channels(A and B).The memory module banks are identified as follows:Bank 1: DIMM1_A and DIMM1_BBank 2: DIMM2_A and DIMM2_BThe memory module banks must be installed in identical pairs inconfigurations that have more than one memory module. For example, ifsocket DIMM1_A contains a 512-MB memory module, then the secondmemory module to be installed must be a 512-MB memory module in socketDIMM1_B.Table 3-1 shows examples of different memory configurations, based on thefollowing guidelines:• The minimum memory configuration is 512 MB.• If only one memory module is installed, it must be installed in theDIMM1_A socket.• A bank must contain identical memory modules.• Install the memory modules in bank 1 (DIMM1_x) before installingmemory modules in bank 2 (DIMM2_x).• Installing three memory modules is not supported.
