Anandtech's Centrino Duo test
While previous Yonah tests by anandtech looked at the new mobile processor as a low-power desktop alternative, this time,
they compare a Centrino Duo notebook against its Centrino predecessor. The outcome is clear, although not overwhelming: Centrino Duo gives a little more battery life at much better overall performance. This will certainly make a good starting point for Apple to go into this intel business.
The notebooks used for the tests are Asus notebooks. Asus is rumoured to be one of two companies to actually produce Apple intel i- and PowerBooks.