CMS 12GB (3X4GB) DDR3 10600 1333MHZ ECC Non Registered DIMM Memory Ram Upgrade Compatible with HP/Compaq® Workstation Z200, Z210, Z400, Z600, Z800 for Server Only - B81 at Amazon.com
AddOn Computer AA160D3N/12GK3 aa160d3n12gk3 12gb 3x4gb Ddr3-1600mhz Udimm Dr Computer Memory Kit for $61.23.