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Why Apple Went 64-Bit With the iPhone 5s 512

Posted by Soulskill
from the all-about-the-software dept.
Hugh Pickens DOT Com writes "Adrian Kingsley-Hughes says it's not just because Apple likes bragging about being first and because a 64-bit processor sounds cooler than 32-bits that Apple used the 64-bit A7 chip in the new iPhone 5s. A shift from a 32-bit processor to a 64-bit part paves the way for iPhones to be fitted out with 4GB+ of RAM down the line, but more importantly the move brings iOS and OS X apps much closer. The architecture for 64-bit apps on iOS will be almost identical to the architecture for OS X apps, making it easy to create a common code base that runs in both operating systems. 'Apple has slowly been bringing iOS-like features to Mac OS for years now: think of Launchpad and Gatekeeper,' writes Sascha Segan. 'The ultimate prize, of course, would be to bring the million-plus iOS apps to Macs. Apple could do that with an ARM-compatible virtual machine on Mac hardware, but it would want the VM, the OS and the associated apps to play nicely in the much larger memory space available on Macs. That means moving the whole system over to 64 bit.' By unifying iOS and Mac OS with Xcode developer tools in a 64-bit space, Apple could once again leap ahead of Microsoft and Google, says Segan. Microsoft hasn't yet been able to leverage its desktop strengths to achieve success as a mobile OS. The 64-bit chips for Android devices aren't ready, and neither is Android itself."
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Why Apple Went 64-Bit With the iPhone 5s

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