Ballistix Tactical 8GB Kit 4GBx2 DDR3 1866 MT/s PC3-14900 CL9 at 1.5V UDIMM 240-Pin Memory BLT2KIT4G3D1869DT1TX0 Designed for extreme enthusiasts, gamers and overclockers Crucial: a trusted name in memory Enhanced heat spreader Limited Lifetime Warranty