Hypertec 4GB DIMM Kit PC3200 (Legacy), 4 GB, 2 x 2 GB, DDR, 400 MHz, 184-pin DIMM Hypertec 4GB DIMM Kit PC3200 (Legacy). Internal memory: 4 GB, Memory layout (modules x size): 2 x 2 GB, Internal memory type: DDR, Memory clock speed: 400 MHz, Memory form factor: 184-pin DIMM