After nearly a month of speculation over what (and from who) is in the iPhone, we finally know that ARM is indeed behind the iPhone's divine little brains. Yes, plural, as ARM's CEO confirmed that there are "at least three" cores developed by ARM inside the iPhone, according to InfomationWeek.


Topping off the facts is speculation that the main CPU is Marvell's PXA320, a "descendant of the StrongARM processor" which used architecture from ARM. Given the need to maximize battery life in a high performance, multi-function device like the iPhone, both the low-power processor and multiple-core approach make sense.

What's Inside Apple's iPhone? Three ARM Processors [InfoWeek]