Kingston Technology HyperX Genesis 10th Anniversary Series 16GB Kit (4x4GB) DDR3 2133MHz PC3-17000 CL11 DIMM XMP Memory KHX21C11X3K4/16X Features a Limited Edition silver heat spreader XMP profiles - easy to enable, factory configured for best maximum performance Low profile to fit under large CPU coolers Reliable and Compatible - 100-percent factory tested with all popular brands of motherboards Non-ECC 2133MHz 240-pin Unbuffered DIMM Guaranteed with the Kingston lifetime warranty and free technical support