Memory accessories - IBM System x3750 M4

Content

• See ServerProven for memory compatibility
• See Configuration and Options Guide (COG) for all parts that are configurable with this system

Notes:

• The IBM System x3750 M4 supports DDR3 memory. The server supports up to 48 DIMMs when four processors are installed, with 12 DIMMs for each processor. 24 DIMM sockets (for processors 1 and 2) are located on the system board. The remaining DIMM sockets (for processors 3 and 4) are located on the processor and memory expansion tray. Each processor has four memory channels, and there are three DIMMs per channel.
• The server supports RDIMMs and LRDIMMs. UDIMMs are not supported.
• Mixing different types of memory (RDIMMs and LRDIMMs) is not supported.
• Mixing 1.5 V and 1.35 V DIMMs in the same server is supported; in such a case, all DIMMs operate at 1.5 V.
• The maximum number of ranks per one channel is eight (with the exception of Load Reduced DIMMs, where more than eight ranks are supported, because one quad-rank LRDIMM provides the same electrical load on a memory bus as a single-rank RDIMM).
• The maximum quantity of DIMMs that can be installed in the server depends on the number of processors installed.
• All DIMMs in the server operate at the same speed, which is determined as the lowest value of:
  • Memory speed that is supported by the specific processor.
  • Lowest of maximum operating speeds for selected memory configuration that depends on rated speed, operating voltage, and quantity of DIMMs per channel.