Corsair Memory Kit 16GB (2x8GB) DDR4 2400MHz SODIMM Memory, (2 x 8GB) at Amazon.com
Samsung 32GB DDR4 2666MHz RAM Memory Module for Laptop Computers (260 Pin SODIMM, 1.2V) M471A4G43MB1 at Amazon.com
Amazon.com: Memoria Vengeance LPX 1 X 8GB PC 3200 Black CORSAIR Memory CORSAIR DDR4 8GB 1X8GB PC 3200 Vengeance LPX Black CMK8GX4M1E3200C16 : Everything Else
High Capacity DDR4 Pricing: 32-128GB - Price Check Q3 2016: DRAM Prices Down Over 20% Since Early 2016