Patriot Viper Xtreme Division 4 Series 8 Quad Channel Kit DDR3 1866 (PC3 15000) 240-Pin SDRAM (PXQ8G1866ELQK) Extreme Performance PC3-15000 (1866MHz) Enhanced Latency (9-11-9-27) 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