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 Voltage: 1.25V Multi-channel Kit: Quad Channel Kit Timing: 15-16-16-35 Buffered/Registered: Unbuffered Features: Extreme performance DDR4 memory designed for gaming and PC enthusiasts Highly screened ICs for maximum performance and reliability Optimized compatibility with Intel X99 system Stylish aluminum heat spreader design to keep the memory cool XMP 2.0 support for automatic overclocking 1.25V ultra low voltage Please check gskill.com for motherboard compatibility chart