CMS 16GB (4X4GB) DDR3 12800 1600MHz ECC Registered DIMM Memory Ram Compatible with HP/Compaq Workstation Z620 Ddr3 Ecc Reg for Server Only at Amazon.com
MemoryMasters 16GB (8x2GB) DDR3-1600MHz PC3-12800 ECC UDIMM 2Rx8 1.5V Unbuffered Memory Compatible for Server/Workstation at Amazon.com
Amazon.com: Axiom 8GB DDR3-1600 Low Voltage ECC RDIMM for Dell - A7990613 : Electronics