Why Pine Trail Isn't Much Faster Than the First Atom
 

In 2008 Intel introduced the Diamondville platform. This was the Atom platform that was used in the vast majority of netbooks and nettops. You had an Atom processor (codename: Diamondville) and Intel's 945GSE chipset. The memory controller was located on the chipset which was built on a 90nm process that ended up eating quite a bit of power. At the end of last year, Intel brought forth Pine Trail. Pine Trail used a new version of the Atom processor (codename: Pineview) and Intel's NM10 Express chipset. The memory controller was moved off the external chipset and on-die with the Atom processor. Graphics also made their way on die and the resulting 45nm chip consumed far less power than the old Atom + 945GSE combo.

http://www.anandtech.com/cpuchipsets...oc.aspx?i=3728