Kingston HyperX 6GB Kit (3x2GB Modules) 1800MHz DDR3 DIMM Desktop Memory (KHX1800C9D3T1K3/6GX) 6GB Kit including three 2GB modules of T1 series tall profile 1800MHz DDR3 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 Low-Latency 240-pin unbuffered DIMM type