184pin Registered Module based on 256Mb E-die (x4, x8) with 1,700 / 1,200mil Height & 72-bit ECC

256MB, 32M x 72 ECC Module (M383(12)L3223ETS) (Populated as 1 bank of x8 DDR SDRAM Module)

512MB, 64M x 72 ECC Module (M383(12)L6423ETS) (Populated as 2 bank of x8 DDR SDRAM Module)

512MB, 64M x 72 ECC Module (M383(12)L6420ETS) (Populated as 1 bank of x4 DDR SDRAM Module)

1GB, 128M x 72 ECC Module [M383(12)L2828ET1(0)] (Populated as 2 bank of x4 DDR SDRAM Module)