How surprising this is. 2gig of RAM for "added" performance.
"While nearly every current PC will be able to run Windows Vista, only half will be able to take full advantage of all of it's features, a recent study by research firm Gartner suggests. In turn, the firm is urging IT managers to take caution when ordering new PCs.
Today's average processor and hard drive should be sufficient to install and use Vista, Gartner says. However, a newer graphics card is likely required if the user wishes to take advantage of the Aero user interface, and the computer should have at least 1GB of memory installed for the operating system to run smoothly."
http://www.betanews.com/article/Report_Half_of_PCs_Not_VistaReady/1144422884