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
TEAMGROUP Elite DDR3 8GB Single 1600MHz (PC3-12800) CL11 Unbuffered Non-ECC 1.5V UDIMM 240 Pin PC Computer Desktop Memory Module Ram Upgrade - TED38G1600C11-S01 - (1x8GB) Single at Amazon.com
Samsung ram Memory 8GB kit (2 x 4GB) DDR3 PC3-12800,1600MHz for 2012 Apple MacBook Pro's, iMac's and 2011/2012 Mac Mini's at Amazon.com