Kingston Technology HyperX Plug n Play 16 GB Kit (2x8 GB) 1600MHz DDR3 PC3- 12800 Non-ECC CL9 SODIMM 1.35V Notebook Memory KHX16LS9P1K2/16 at Amazon.com
Rasalas 8GB DDR3 PC3L-12800S 8GB 1600 MHz DDR3 SODIMM RAM for Intel AMD Laptop, MacBook Pro Mid 2012, iMac Late 2012/ Early/Late 2013, Late 2012/2013, Retina 5K Display, Mac Mini at Amazon.com