Users may <A HREF="http://www.eweek.com/article2/0,1759,1752671,00.asp">pay a penalty in battery life</A> for the increased performance found in the new "Sonoma" Centrino platform from Intel. Although Intel has aggressively power-managed the platform--for example, cutting the chip set's internal clock by half--the combination of one new feature, PCI Express, and the faster processor speeds may result in a slight decrease in battery life.