CMS 12GB (3X4GB) DDR3 10600 1333MHZ ECC Registered DIMM Memory Ram Upgrade Compatible with IBM® System X3550 M3 7944 Ddr3-Pc1333 Ecc Reg for Server Only - C20 at Amazon.com
CMS 12GB (3x4GB) DDR3 10600 1333MHZ ECC NON REGISTERED DIMM Memory Ram Upgrade Compatible with HP/Compaq® Workstation Z600 B3 SERIES DDR3 ECC For Server Only - B81 - Newegg.com
CMS 12GB (3X4GB) DDR3 10600 1333MHZ NON ECC DIMM Memory Ram Upgrade Compatible with Dell® Studio Xps 9100 Desktop - C127 - Walmart.com