Kingston Technology HyperX 1 GB Low-Latency Desktop Memory Single DDR2 800 (PC2 6400) 240-Pin DDR2 SDRAM KHX6400D2LL/1G 1GB module of 800MHz Class 4 Low-Latency DDR2 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 240-pin unbuffered DIMM type