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
G.SKILL Ripjaws X Series 8GB 240-Pin PC RAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL10S-8GBXL - Newegg.com