There is one more twist to the story. Recently, AMD said they don't intend to compete with Atom. They instead prefer to target lower end users than atom with Geode and higher end users with yukon and congo.
*www.tomshardware.co.uk/amd-yukon-congo-netbook-atom,news-29638.html
That means this athlon 64 2000+ was just to show intel that even AMD can do something great.