CMS 6GB (3X2GB) DDR3 10600 1333MHZ ECC Non Registered DIMM Memory Ram Upgrade Compatible with HP/Compaq® Workstation Z200 Z210 Z400 Z600 Z800 for Server Only - C80 at Amazon.com
CORSAIR XMS3 6GB (3 x 2GB) DDR3 1600 (PC3 12800) Desktop Memory Model TR3X6G1600C8 G - Newegg.com