An Intel executive stated that notebooks based on Intel's newest Centrino platform, Sonoma, perform just as well as high-end Pentium 4 desktop systems.
Last week during the launch of Intel's Sonoma Centrino platform the company showed a Sonoma-based notebook and a Pentium 4 desktop PC running a computer game, to compare performance.
In the demonstration, the performance of a Sonoma system with a 2.13-GHz Pentium M processor, 1GB of memory, and the Alviso chip set was said to be comparable to that of a desktop system carrying a 3.6-GHz Pentium 4 processor with hyperthreading, 1GB of memory, and the Grantsdale chip set (which also supports PCI Express and DDR2). Intel had previously compared the high end of its notebook technology to the midrange of its desktop technology.
More info about the fate of the Pentium 4 at PC World