CMS 12GB (3x4GB) DDR3 10600 1333MHZ ECC Non Registered DIMM Memory Ram Compatible with HP/Compaq Workstation Z600 B3 Series DDR3 ECC for Server Only - B81 at Amazon.com
Kingston Technology 8GB DDR3 1600MHz PC3-12800 ECC DIMM Memory for Select Dell Desktops KTD-PE316E/8G at Amazon.com
Samsung 4GB 240-Pin DDR3 SDRAM ECC Registered DDR3 1333 Server Memory Model (M393b5170fh0-Ch9) 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