G.Skill 16GB Ripjaws 4 DDR4 2400MHz PC4-19200 CL15 Quad Channel kit (4x4GB) 16GB Quad Channel Kit - 4x matched 4GB modules DDR4 2400MHz memory, PC4-19200 With Red Ripjaws 4 heatsinks Timings of 15-15-15-35 at 1.2V Lower voltage means lower power consumption