Ballistix Elite 8GB Kit 4GBx2 DDR3 1600 MT/s PC3-12800 CL8 at 1.5V UDIMM w/XMP/TS 240-Pin BLE2KIT4G3D1608DE1TX0 Designed for extreme enthusiasts, gamers and overclockers Efficient Finned aluminum heat spreaders Thermal Sensor allows real time temperature monitoring Advanced Speeds and timings (XMP Profile) Limited Lifetime Warranty