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
G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model (F3-12800CL9D-8GBRL) at Amazon.com
Amazon.com: Patriot 16GB(2x8GB) Viper III DDR3 1600MHz (PC3 12800) CL9 Desktop Memory With Black Mamba Heatsink - PV316G160C9K : Electronics
OWC 16GB (2x8GB) ram Upgrade PC3-12800 DDR3L 1600MHz sodimm 204 Pin CL11 Memory Upgrade Kit Compatible with Late iMac, Mac Mini, and MacBook Pro Computer at Amazon.com
AddOn 16GB DDR3-1600MHz 204-Pin SODIMM at Amazon.com
IBM 00D4955 4GB DDR3 SDRAM Memory Modules - 4 GB (1 x 4 GB) - DDR3 SDRAM - 1600 MHz DDR3-1600/PC3-12800 - 1.50 V - ECC - Unbuffered - 240-pin - DIMM at Amazon.com