The A6 inside the iPhone 5 varies its clock speed for performance
One possible reason the iPhone 5 has such great battery life is the clever way the A6 changes its clock speed. While originally thought to be clocked at 1GHz, the chip has been clocked at 1.1GHz as well as 1.3GHz by Current Editorials.
While 9to5Mac saw the chip's speed drop as low as 550MHz, this seemed to do more with an as-yet-updated Geekbench app testing the chip (which also resulted in the 1GHz assumption). A Geekbench update seems to paint a different picture now. By all accounts it appears the chip can change "speeds," however, resulting in better battery life and dynamically tuning itself to the demand for CPU.
Subscribe to Newsletter
Software Updatesmore updates
- Fantastical 2.1 for iOS adds new snooze, search and notification features
- ExpanDrive 4, more services and faster sync
- Apple adds iTunes Extras to Apple TV
- Spotify updates with new iPhone controls in time for summer BBQs
- iTunes U update will bring course creation and student discussion to iPad app
- Dropbox for iOS update adds new setup and file management options