Kingston ValueRAM 8GB Kit (2x4GB) 1333MHz DDR3 Non - ECC CL9 DIMM SR x8 STD Height 30mm Desktop Memory KVR13N9S8HK2/8 One kit of two 4GB modules of 1333MHz DDR3 Memory 240-pin Unbuffered DIMM From the industry leader in PC Memory Backed by a lifetime warranty and free technical support