Corsair CML16GX3M2A1600C9 Vengeance 16GB (2 x 8GB) DDR3 1600 MHz (PC3 12800) Desktop Memory 1.5v at Amazon.com
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