# Friday Q&A 2017-11-10: Observing the A11's Heterogenous Cores

DevFeed: [Friday Q&A 2017-11-10: Observing the A11's Heterogenous Cores](<https://devfeed.tech/articles/friday-q-a-2017-11-10-observing-the-a11-s-heterogenous-cores-30625.md>)

Original publisher: [Read original article](<http://www.mikeash.com/pyblog/friday-qa-2017-11-10-observing-the-a11s-heterogenous-cores.html>)

Author: Mike Ash

Published: 2017-11-10T12:41:00Z

Content type: article

Language: en

Sources: [Mike Ash](<https://devfeed.tech/sources/mike-ash.md>)

Topics: [cpu](<https://devfeed.tech/topics/cpu.md>), [Hardware](<https://devfeed.tech/topics/hardware.md>), [Mobile](<https://devfeed.tech/topics/mobile.md>), [iOS](<https://devfeed.tech/topics/ios.md>), [iphone](<https://devfeed.tech/topics/iphone.md>)

Tags: [apple](<https://devfeed.tech/tags/apple.md>), [cpu](<https://devfeed.tech/tags/cpu.md>), [hardware](<https://devfeed.tech/tags/hardware.md>), [ios](<https://devfeed.tech/tags/ios.md>), [iphone](<https://devfeed.tech/tags/iphone.md>), [mobile](<https://devfeed.tech/tags/mobile.md>), [performance](<https://devfeed.tech/tags/performance.md>)

## AI overview

This article examines whether the heterogeneous cores in Apple's A11 mobile CPU can be observed in action on iOS, following the release of the iPhone X. It explains the distinction between high-performance and high-efficiency CPU cores and their differing power characteristics.

## Source excerpt

Apple's newest mobile CPU, the A11, brings a new level of heterogeneous computing to iOS, with both high and low performance cores that are always on. With the release of the iPhone X, I set out to see if I could observe these heterogeneous cores in action. (Read More)