Patriot Memory Performance Viper 3 DDR3 8GB Memory Kit PC3-15000 (1866MHZ) PV38G186C0K Black Mamba Performance DDR3, DRAM, PC memory for gaming, power computing, content creation 8GB (2 x 4GB) DDR3 Kit 240-Pin NON-ECC UDIMM 1.5V, Timing: 10-11-10-30, 1866 MHz Compatible with Intel 6 & 7 Series / AMD 9 & FM Series and other DDR3 platforms