4GB DDR3, 240-pin DIMM, 1600MHz, Registered (buffered)
DELL SNPJJNC7C/4G, 4 GB, 1 x 4 GB, DDR3, 1600 MHz, 240-pin DIMM
DELL SNPJJNC7C/4G. Internal memory: 4 GB, Memory layout (modules x size): 1 x 4 GB, Internal memory type: DDR3, Memory clock speed: 1600 MHz, Memory form factor: 240-pin DIMM