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New TSMC/Samsung A9 battery test confirms Apple’s claims

by Jacob Kleinman | October 13, 2015October 13, 2015 7:00 am PDT

Apple has strongly denied any noticeable difference in the battery life between new iPhones based on where the A9 processor comes from. Now a new study from Ars Technica appears to back up the Cupertino company’s claim.

The test used two new copies of the iPhones 6s, one with a Samsung-made A9 chip and one with a processor from TSMC. The results seem to confirm that Samsung’s version offers slightly less battery life, though not always. For the most part the two devices were extremely close, not counting the more taxing Geekbench test. But when it comes to something like Wi-Fi browsing there isn’t much of a difference.

Ars Technica concludes that the source of your A9 chip shouldn’t really be a concern. That lines up with Apple’s statements. The company previously said that its internal tests found a difference of just 2 to 3 percent battery life between the two iPhone variants.

Ars Technica said that a simple two-device test can’t be totally accurate. That’s an extremely small sample size, and it doesn’t take the source of other components like the display, RAM and Taptic Engine into account. Only Apple can really know which version of the iPhone 6s offers the best battery life, and it’s unlikely the company will ever reveal that information.


Jacob Kleinman

Jacob Kleinman has been working as a journalist online and in print since he arrived at Wesleyan University in 2007. After graduating, he took a...