Intel Arrandale: 32nm for Notebooks, Core i5 540M Reviewed Clarkdale is the desktop processor, but Arrandale is strictly for my notebooks. The architecture is the same as Clarkdale. You've got a 32nm Westmere core and a 45nm chipset on the same package: The two-chip solution does matter more for notebooks as it means that motherboards can shrink. Previously this feature was only available to OEMs