Kingston Technology 16GB 1600MHz DDR3 Reg ECC Low Voltage DIMM Memory for Dell Desktops (KTD-PE316LV/16G) at Amazon.com
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