With the recent revelation that Apple had (not unexpectedly) sourced the A9 processor in the iPhone 6s from two different suppliers came the discovery that the model manufactured by Samsung is 10% smaller than the one built by TSMC.
Along with the size difference comes a difference in the power efficiency of each model, with many reports indicating—and Apple eventually confirming—that phones with the Samsung chip will likely see 2-3% lower battery life.
Today Ars Technica has published its own findings based on the results of a set of battery tests on each processor, showing that the TSMC hardware outpaces Samsung’s in most test categories, but not all.
