Kingston Technology HyperX 2 GB Kit (2x1GB Modules) 1600 (PC3 12800) 240-Pin DDR3 SDRAM KHX1600C9AD3K2/2G 2GB Kit including two 1GB modules of 1600MHz Class 9 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