A-Tech 8GB RAM Replacement for Samsung M471B1G73DB0-CK0 | DDR3 1600MHz PC3-12800 2Rx8 1.5V SODIMM 204-Pin Memory Module at Amazon.com
samsung ddr3 8gb ram | Newegg.com
Samsung ram Memory Upgrade DDR3 PC3 12800, 1600MHz, 204 PIN, SODIMM for 2012 Apple MacBook Pro's, 2012 iMac's, and 2011/2012 Mac Mini's (16GB kit (2 x 8GB)) at Amazon.com