4GB DDR2-800MHZ UDIMM DR COMPUTER MEMAddOn 4GB DDR2 800MHZ 240 pin DIMM F Desktops For Server 4 GB (1 x 4GB) DDR2 800 PC2 6400 DDR2 SDRAM 800 MHz Dual rank Memory CL5 1. 80 V Non ECC Unbuffered 240 pin UDIMM Lifetime Warranty VPN: AA800D2N5 4G SKU: RSC477799 UPC: 821455044001 4 GB memory allows you to have more programs open at a time Up to 800 MHz memory speed with CL5 latency to manage your routine softwares with pace and accuracy 240 pin pin DDR2 SDRAM interface synchronizes