IBM 436854u - System x3200 M2 5U Mini Tower Server User Manual

Also see for 4367BDU: Brochure & specs

Contents

Installing a memory moduleThe following notes describe the types of dual inline memory modules (DIMMs) thatthe server supports and other information that you must consider when you installDIMMs:v The server supports only industry-standard, 1.8 V, 240-pin double-data-rate 2(DDR2), 667 or 800 MHz, PC2-5300 or PC2-6400, unbuffered, synchronousdynamic random-access memory (SDRAM) dual inline memory modules (DIMMs)with error correcting code (ECC). These DIMMs must be compatible with thelatest DDR2 667 or 800 MHz SDRAM unbuffered DIMM specification. For a listof supported optional devices for the server, see http://www.ibm.com/servers/eserver/serverproven/compat/us/.v The optional DIMMs that are available for the server are 512 MB, 1 GB, and 2GB. The server supports a minimum of 512 MB and a maximum of 8 GB ofsystem memory.v Some servers come with one 512 MB DIMM, two 512 MB DIMMs, or two 1 GBDIMMs installed.Depending on the DIMM sizes that are installed in your server, the server cansupport one, two, or four DIMMs. The 512 MB DIMM option kit contains oneDIMM; however, the 1 GB DIMM and 2 GB option kits each contain two DIMMs.v The system board contains four DIMM connectors and supports two-way memoryinterleaving. For two-way memory interleaving, DIMMs must be installed inmatched pairs.If one DIMM is installed in the DIMM 1 connector, when you install an additionalDIMM, it must be installed in the DIMM 3 connector, and it must be the samesize, speed, type, and technology as the DIMM in the DIMM 1 connector. Youcan use compatible DIMMs from various manufacturers.If you install a second pair of DIMMs in the DIMM 2 and DIMM 4 connectors,they do not have to be the same size, speed, type, and technology as theDIMMs in the DIMM 1 and DIMM 3 connectors. However, the size, speed, type,and technology of the DIMMs that you install in the DIMM 2 and DIMM 4connectors must match each other.v The maximum operating speed of the server is determined by the slowest DIMMin the server.v The server can operate in single-channel mode or dual-channel mode.v DIMM population is based on single-rank, double-rank, or combined single-rankand double-rank DIMMs. DIMMs must be installed in order, starting with theDIMM connector that is farthest from the memory controller hub. Double-rankDIMMs must be installed in the DIMM connector that is farthest from the memorycontroller hub when you install a combination of single-rank and double-rankDIMMs. The following tables show examples of populating the server withdifferent combinations of single-rank and double-rank DIMMs and differentoperating modes.Table 2. Single-channel mode with single-rank and double-rank DIMMsChannel 0 Channel 1DIMM 1 DIMM 2 DIMM 3 DIMM 4Single-rankDouble-rankSingle-rank Single-rankChapter 2. Installing optional devices 27