Kingston HyperX Beast 32 GB Kit (4x8 GB) 2133MHz DDR3 PC3-17000 Non-ECC CL11 DIMM XMP Desktop Memory KHX21C11T3K4/32X 32GB Kit (4x8GB) DDR3 XMP Desktop Memory Unique black heatspreader 100-percent factory tested XMP profiles - factory configured for best maximum performance Non-ECC 2133MHz 240-pin Unbuffered DIMM Lifetime warranty, free technical support