Crucial Ballistix 2666 MHz DDR4 DRAM Desktop Gaming Memory Kit 16GB (8GBx2) CL16 BL2K8G26C16U4B (BLACK) at Amazon.com
Silicon Power DDR4 16GB (2 x 8GB) RAM 2666MHz (PC4 21300) 288-pin CL19 1.2V Non ECC Unbuffered UDIMM Desktop Memory with Heatsink SU016GBLFU266BD2J5 at Amazon.com
Addon 8gb Ddr4 Sdram Memory Module - For Desktop Pc - 8 Gb (1 X 8 Gb) - Ddr4-2666/pc4-21300 Ddr4 Sdram - Cl15 - 1.20 V - Non-ecc - Unbuffered : Target
JEDEC DDR4 Memory Modules Get More Affordable - Price Check Q3 2016: DRAM Prices Down Over 20% Since Early 2016