https://www.theverge.com/circuitbreaker/2018/7/26/17616796/samsung-memory-chip-improve-battery-life-phones

Samsung’s new memory chips that just went into mass production for “next-gen flagship” smartphones are designed to address battery drain through improved efficiency. Thin phones are nice and all, but longer battery life in high-end smartphones is even better.

Specifically, the second-generation 10nm (1y-nm) class 16Gb LPDDR4X (Low Power, Double Data Rate, 4X) Mobile DRAM chip achieves the current 4,266 Mbps data rate seen in flagship smartphones, but does so with a power decrease that’s up to 10 percent.