G.SKILL Ripjaws 4 series 64GB (8 x 8GB) 288-Pin DDR4 SDRAM 2800 (PC4-22400) Intel X99 Desktop Memory Model F4-2800C15Q2-64GRK G.SKILL Ripjaws 4 series 64GB (8 x 8GB) 288-Pin DDR4 SDRAM DDR4 2800 (PC4-22400) Intel X99 Desktop Memory Model F4-2800C15Q2-64GRK