IBM System x3250 M3 Product Manual

Also see for System x3250 M3 Type 4251: Installation and user guide Specifications Datasheet Installation and user guide Installation and user guide

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IBM System x3250 M3 9The x3250 M3 supports DDR3 ECC DIMMs. The server has six DIMM slots, however, the maximumamount of DIMMs that can be installed is limited by type and rank of DIMM used:RDIMMsUp to six single-rank RDIMMs for a maximum of 6 GB (6x 1 GB)Up to six dual-rank RDIMMs for a maximum of 24 GB (6x 4 GB)Up to four quad-rank RDIMMs for a maximum of 32 GB (4x 8 GB)UDIMMsUp to four single-rank UDIMMs for a maximum of 4 GB (4x 1 GB)Up to four dual-rank UDIMMs for a maximum of 16 GB (4x 4 GB)Mixing of UDIMMs and RDIMMs is not supported. RDIMMs are only supported with Intel Xeon 3400 seriesprocessors.Memory speed is determined by type of processor used and the number and type of DIMMs installed:Intel Xeon 3400 series processors1333 MHz when one or two single-rank or dual-rank RDIMMs or UDIMMs per channel areinstalled1066 MHz when one quad-rank RDIMM per channel is installed800 MHz when three single-rank or dual-rank RDIMMs or two quad-rank RDIMMs per channel areinstalledIntel Celeron G, Pentium G, or Core i31066 MHz when one or two single-rank or dual-rank UDIMMs per channel are installed