Patriot Viper Xtremem Division 4 Series 16 Quad Channel Kit DDR3 1600 (PC3 12800) 240-Pin SDRAM (PXQ316G1600LLQK) Extreme Performance PC3-12800 (1600MHz) Low Latency (8-9-8-24) Voltage: 1.65V XMP 1.3 Ready Equipped with an extruded aluminum shield to provide improved cooling 100% Tested and Verified RoHS Compliant Only compatible with Intel X79 chipsets