12GB (4GBx3) DDR3 ECC 1333MHz Memory for 2010 Mac Pro 5.1 6-core and 12-core
12GB OWC DDR3 1333MHz ECC Memory Upgrade Kit for Mac Pro 8-core and Quad-core Xeon systems (3x 4GB)
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
12GB (6 x 2GB) DDR3 PC3-10600 1333MHz RDIMM Workstation RAM
CMS 12GB (3X4GB) DDR3 10600 1333MHZ NON ECC DIMM Memory Ram Upgrade Compatible with Dell® Studio Xps 9100 Desktop - C127 - Walmart.com