Kingston Technology HyperX Plug n Play 16 GB Kit (2x8 GB) 1866MHz DDR3 PC3-15000 Non-ECC CL11 DIMM Desktop Memory KHX18C11P1K2/16 at Amazon.com
Corsair CML16GX3M2A1600C10B Vengeance LP Blue 16 GB (2x8 GB) DDR3 1600MHz (PC3 12800) Desktop Memory 1.5V at Amazon.com
Amazon.com: Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3L 1600MHz for Mac Book Pro(Early/Late 2011,Mid 2012), iMac(Mid 2011,Late 2012,Early/Late 2013,Late 2014,Mid 2015), Mac Mini(Mid 2011,Late 2012) MAC RAM : Electronics