G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model (F3-12800CL9D-8GBRL) at Amazon.com
Samsung ram Memory 4GB (1 x 4GB) DDR3 PC3-12800,1600MHz, 204 PIN, SODIMM for laptops at Amazon.com
DDR3 RAM】 Gigastone Desktop RAM 32GB (4x8GB) DDR3 32GB DDR3-1600MHz PC3- 12800 CL11 1.5V UDIMM 240 Pin Unbuffered Non ECC for PC Computer Desktop Memory Module Ram Upgrade Kit (Desktop ONLY) 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