Kingston HyperX Blu 8GB Kit 1333MHz DDR3 Pc3-10600 Non-ECC CL9 DIMM Desktop Memory KHX13C9B1K2/8R 8GB Kit (2x4GB) of DDR3 Non-ECC Notebook 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 1333MHz 240-pin CL9 Unbuffered DIMM Backed by a lifetime warranty and free technical support