16GB DDR2, 240-pin DIMM, 667MHz, Registered (buffered)
IBM 40V6128, 16 GB, DDR2, 667 MHz, 240-pin DIMM
IBM 40V6128. Internal memory: 16 GB, Internal memory type: DDR2, Memory clock speed: 667 MHz, Memory form factor: 240-pin DIMM, CAS latency: 5, ECC