Report: A6 chip in Apple iPhone 5 is a custom design; 1GB of RAM is aboard
Battery life of some functions on the Apple iPhone 5
Perhaps the most important news is that Apple has designed much of the processor in-house. Anandtech says that it has confirmed that the A6 is "based on Apple's own ARM based CPU core and not the Cortex A15," and was manufactured using the 32nm process. Designing the A6 in-house means that Apple most likely optimized the design to allow the phone to run at the specific speed it needs for the best customer experience. The site also says that they believe that the new version of Apple's smartphone is being powered by a dual-core processor. All of those out there who were looking for Apple to go quad-core on the iPhone will have to wait until next year.
source Anadtech (1), (2) via Engadget