Instead of the entire screen lighting up while in ambient mode, only the active pixels consume power, making for less battery drain. (androidauthority.com)
The two processors are the leading edge in technology, but the Exynos 7420 uses the newest 14nm versus the 20nm on the Qualcomm — faster and more power efficient and that means less battery drain and less heat. (androidheadlines.com)
The Galaxy S7 is powered by the latest Android ™ 6.0 Marshmallow OS which uses less battery drain from the apps you don't use. (hubpages.com)