G.Skill Ripjaws V 8 GB (2 x 4 GB) DDR4-2800 CL15 Memory (F4-2800C15D-8GVR) - PCPartPicker
G.Skill Ripjaws V 4GB DDR4 2666MHz Red Heatsink Desktop.
G.Skill 8GB (2 x 4GB) Ripjaws V Series 288-Pin DDR4 SDRAM DDR4 2400 (PC4-19200) Intel Z170 Platform/Intel X99 Platform Desktop Memory Model F4-2400C15D-8GVR at Amazon.com