IBM System x3690 X5 9Memory optionsThe IBM System x3690 X5 supports DDR3 memory. Memory is installed in DIMM sockets either on thesystem planar (16 sockets) in an optional memory mezzanine tray (16 sockets). The DIMMs on thesystem planar are directly connected to the first processor, and the DIMMs on the mezzanine are directlyconnected to the second processor. If you install the mezzanine then you must install the secondprocessor. However the reverse is different: you do not have to install the mezzanine if you have twoprocessors installed (although for performance reasons the mezzanine is recommended).The following table lists memory options available for x3690 X5 server and for the MAX5 memoryexpansion unit.Table 6. Memory options - Machine type 7147 (Intel Xeon E7-2800 and E7-8800 series processors)PartnumberDescription Supportedin MAX5 V2(88Y6529)Maximumquantitysupported81Y8926 IBM x3690 X5 16-DIMM Internal Memory Expansion (for machine type 7147only)No 144T1592 2GB (1x2GB, 1Rx8, 1.5V) PC3-10600 CL9 ECC DDR3 1333MHz Yes 3244T1481 2GB (1x2GB, 2Rx8, 1.5V) PC3-10600 CL9 ECC DDR3 1333MHz No 3249Y1407 4GB (1x4GB, 2Rx8, 1.35V) PC3L-10600 CL9 ECC DDR3 1333MHz No 3244T1599 4GB (1x4GB, Dual Rankx8) PC3-10600 CL9 ECC DDR3 1333MHz Yes 3246C7448 4GB (1x4GB, Quad Rankx8) PC3-8500 CL7 ECC DDR3 1066MHz No 3249Y1399 8GB (1x8GB, 4Rx8, 1.35V) PC3L-8500 CL7 ECC DDR3 1066MHz No 3246C7482 8GB (1x8GB, Quad Rankx8) PC3-8500 CL7 ECC DDR3 1066MHz Yes 3249Y1400 16GB (1x16GB, 4Rx4, 1.35V) PC3L-8500 CL7 ECC DDR3 1066MHz No 3246C7483 16GB (1x16GB, 4Rx4, 1.5V) PC3-8500 CL7 ECC DDR3 1066MHz Yes 32The MAX5 supports a subset of the memory DIMMs listed as shown in the table. The 16 GB memoryoptions that are supported in the MAX5 as listed in the above table are only supported when it is the onlytype of memory used in the MAX5. No other memory options can be used in the MAX5 if the 16GB DIMMare used in the MAX5. This DIMM also supports redundant bit steering (RBS) when used in the MAX5 orwhen used in x3690 X5 servers with E7 processors (machine type 7147).The following memory protection technologies are supported:ECCChipKillMemory MirroringMemory SparingRedundant Bit Steering (MAX5 or servers with E7 processors only, x4 DIMMs only)