1GB DDR2-800MHZ UDIMM DR COMPUTER MEMORYAddOn 1GB DDR2 800MHZ 240 pin DIMM F Select Desktops 800MHz DDR2 800 PC2 6400 240 pin DIMM VPN: AA800D2N5 1G SKU: RSC723879 UPC: 821455008652 1 GB memory allows you to have more programs open at a time 800 MHz speed and Unbuffered signal to execute routine softwares at a steady pace DDR2 800 PC2 6400 interface multiplexes 2 bit data from memory cell and I O buses to minimize processor idle time and enhance your computer's performance