IBM/Lenovo 46C7448-X3 12GB 3X4GB DDR3 DIMM 240-pin LP 1066MHz PC3-8500 1.5V 7-7-7-20 ECC REG 4Rx8
Mushkin 12GB PC3-8500 Kit. Internal memory: 12288 MB, Internal memory type: DDR3, Memory clock speed: 1066 MHz. Memory voltage: 1.5 V. Compatibility: System x3200 M3 7327, 7328-xxx System x3250 M3 4251, 4252, 4261-xxx System x3500 M2 7839-xxx