The MediaTek's P-series chips are the first to use TSMC's 28nm HPC+ process, which reduces processor power consumption.
http://www.notebookcheck.net/MediaTek-unveils-octa-core-Helio-P10-SoC.143883.0.html
45 percent by energy efficiency not performance :p
Perdsessor of mali 860 is mali 760 .