The very first review of Atom N470 netbook is out, with disappointing results for people that hoped in a performance leap.
"We went into reviewing the (Lenovo) S10-3t hoping it would be one of the faster netbooks we've ever used considering its new 1.83GHz Atom N470 processor and 2GB of RAM. However, those dreams quickly faded when we were met with the typical netbook performance. In fact, the N470 scored 1,348 on PCMark05, which is actually lower than the N450-powered HP Mini 210's 1393."
Just in case you don't know it, the Atom N470 is clocked at 1.83GHz, about 200MHz more than all other Atom for nebooks (Atom N270/N280 and the newest N450 are clocked around 1.6GHz).
Actually this isn't a big surprise: the higher clock helps Atom better perform with number crunching benchmarks while PCMark05 is a more or less "real life" benchmark testing many different subsystem additional 200MHz doesn't make a big difference.