Crucial 16GB 2x8GB DDR3 1333Mhz PC3-10600 SO-DIMM 204pin For Mac RAM Memory Green| Techinn
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
16GB 1333 MHz DDR3 Memory for 2011 MacBook Pro and iMac