Arch Memory 1 GB (1 x 1 GB) 200-Pin DDR2-800 PC2-6400 So-dimm RAM Arch Memory is a Registered Trademark of Arch Computer, LLC 1 x 1GB DDR2-800 PC2-6400 200Pin Sodimm CL6 Dual Rank (2Rx8) 800MHz Lifetime Replacement Warranty Included