Kingston HyperX Beast 16GB Kit (4x4GB) 2400MHz DDR3 PC3-19200 Non-ECC CL11 DIMM XMP Desktop Memory KHX24C11T3K4/16X 16GB Kit of DDR3 Non-ECC Desktop Memory Utilizes HyperX module with faster latency timing for higher performance and speed Specifically designed and tested for compatibility in various makes and models of desktop computers From the industry leader in PC memory Non-ECC 2400MHz 240-pin CL11 Unbuffered DIMM Backed by a lifetime warranty and free technical support