After spending hours searching solution for heat and fan problem with SP3, finally I found the problem, it is the google chrome. Uninstall it and hopefully you will be one of the lucky cute guy (or girl) on this planet to solve those problem and start loving the gorgeous SP3.
SP3 is definitely one of my fave, by uninstalling chrome my SP3 battery in average lasts for 7 hours for medium use (no video and heavy editing)