32GB DDR3, 240-pin DIMM, 1066MHz
IBM 820X-EM4C, 32 GB, 2 x 16 GB, DDR3, 1066 MHz, 240-pin DIMM
IBM 820X-EM4C. Internal memory: 32 GB, Memory layout (modules x size): 2 x 16 GB, Internal memory type: DDR3, Memory clock speed: 1066 MHz, Memory form factor: 240-pin DIMM, CAS latency: 16