I guess this explains why Samsung went with Intel over their own Exynos on the Galaxy Tab. Look at how the Lenovo K800 (Atom) compared to Galaxy S4 (Exynos/SnapDragon) :

http://www.businesswire.com/news/home/20130607005475/en/Intel-Apps-Processor-Outperforms-NVIDIA-Qualcomm-Samsung

http://mms.businesswire.com/media/20130607005475/en/371984/5/intel_chart.jpg?download=1

This is just Saltwell (CloverTrail+) versus best of ARM A15, by end of this year Silvermont will increase Atom performance by 3x or reduce power draw by 1/5th iso performance. Then next year Airmont shrinks Silvermont to 14nm FinFET, where is ARM/QCOM going to be then...