Real Intel Atom (1.6GHz) Benchmarks
 

The first result sets our expectations: a 1.6GHz Atom is around 10% faster than an 800MHz Pentium M. Early data Intel shared with us indicated that the 1.6GHz Atom should be around 20% faster than an 800MHz Dothan, so we're within the realm of reasonable here. Compared to the cheapest single-core desktop CPU Intel is shipping today, the Atom offers around 60% of its performance.

http://www.anandtech.com/systems/sho...spx?i=3321&p=7