G.Skill Ripjaws X Series 16 GB (2 x 8 GB) 240-Pin SDRAM (PC3-12800) DDR3 1600 CL10-10-10-30 1.50V Dual Channel Desktop Memory Model F3-12800CL10D-16GBXL at Amazon.com
Samsung 4GB DDR3 PC3-12800 1600MHz 204-Pin SODIMM Laptop Memory Module RAM. Model M471B5273DH0-CK0 at Amazon.com
Amazon.com: OWC 12.0GB (3X 4GB) DDR3 ECC PC10600 1333MHz SDRAM ECC Compatible with Mac Pro (OWC1333D3W4M12K) : Everything Else
12GB KIT (3 x 4 GB) for Alienware Area-51 Desktop Series ALX (DDR3) (3 Slots). DIMM DDR3 Non-ECC PC3-12800 1600MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com
CMS 12GB (3X4GB) DDR3 10600 1333MHZ ECC Registered DIMM Memory Ram Upgrade Compatible with HP/Compaq® Workstation Z600 C2 Seires Only Ddr3 Ecc Reg for Server Only - C20 at Amazon.com