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
Silicon Power DDR4 8GB 3200MHz (PC4-25600) CL22 SODIMM 260-Pin 1.2V Non-ECC Laptop RAM Notebook Computer Memory at Amazon.com
Patriot Viper Elite II DDR4 8GB(1 x 8GB) 2666MHz Single Memory Module at Amazon.com
HyperX Fury 8GB 2666MHz DDR4 CL16 DIMM 1Rx8 Black XMP Desktop Memory Single Stick HX426C16FB3/8 at Amazon.com
OWC 8GB PC3-12800 DDR3L 1600MHz SO-DIMM 204 Pin CL11 Memory Module Upgrade Compatible with iMac, Mac Mini, and MacBook Pro (OWC1600DDR3S8GB) at Amazon .com