As usual, Apple has kept quiet about the internals of the iPhone 5. We know that Apple has upgraded to an A6 processor, yet we aren’t even sure if it’s a dual-core or quad-core yet. To shed some light onto the situation, AnandTech speculates the A6 performance gains are due to ARM Cortex A15 cores:
Based on the performance gains, Apple’s history of SoC naming and some other stuff we’ve heard recently, it looks like Apple has integrated two ARM Cortex A15 cores on Samsung’s 32nm LP HK+MG process. This is a huge deal because it means Apple beat both TI and Samsung on bringing A15s to market.
As this is just speculation currently, we will have to wait until iFixit completes their annual iPhone teardown to see what the iPhone 5 beholds. While we wait, you could begin thinking about the GPU. Apple mentioned that it was 2X faster than the iPhone 4S, so once again, AnandTech has more:
The GPU side isn’t entirely clear at this point, but the 2x gains could be had through a move to 4 PowerVR SGX543 cores up from 2 in the iPhone 4S.
If the iPhone 5 indeed utilizes ARM Cortex A15 cores, then the A6 is simply an enhanced dual-core processor. But it won’t be long until September 21st hits and we learn the official truth.