Kingston HyperX Beast 16 GB Kit (2x8 GB) 1866MHz DDR3 PC3-15000 Non-ECC CL10 DIMM XMP Desktop Memory KHX18C10T3K2/16X 16GB Kit (2x8GB) DDR3 XMP Desktop Memory Unique black heatspreader 100-percent factory tested XMP profiles - factory configured for best maximum performance Non-ECC 1866MHz 240-pin Unbuffered DIMM Lifetime warranty, free technical support