Apple's jump to 64-bit computing architecture or A7 chips will likely happen on 2014 and the first device to flex the new CPU muscle is the rumoured 4.8-inch iPhone, also widely-regarded as the tech giant's upcoming entry into the exploding phablet arena.

This is suggested by the winding down business relationship between Apple and Samsung, according to Apple Insider. The South Korean tech giant builds the processing chips that Apple uses for its iPhone and iPad models but the agreement between the two titans will soon end.

Expectedly, the iPhone maker is looking elsewhere for its mobile CPU requirements as the company has been vocal on its intents to eventually erase Samsung from its supply chain system. The two firms have become bitter rivals following years of close collaboration.

The neck-to-neck tussle between iOS and Galaxy devices best represent the enmity that now draws a wide chasm between Apple and Samsung.

And with Samsung on its way out of Apple's business empire, one possible replacement that will handle the processor manufacturing duties for future iPhone and iPad models is the Taiwan Semiconductor Manufacturing Company (TSMC), Apple Insider said, citing MacOtakara as its source.

TSMC, the same report said, will be tasked to continue the ongoing works on A7 chips, most likely employing the manufacturing firm's in-house 20-nanometer chip process.

The company had earlier indicated that its new mobile chips will be in full production swing by early next year, which meets the supposed unveiling schedule set by Apple for the supposed big-screen iPhone 6.

If indeed TSMC will secure the coveted mobile chip contract from Apple, the iPhone 6 will become the first device not powered by Samsung's A-series chips that were first introduced three years ago via the first iPad edition.

It also means that the iPhone 5S, budget iPhone, iPad Mini and iPad 5 will be the last Apple devices to bear Samsung's mobile computing chip imprint.

It is possible too that Apple and TSMC have already inked a deal that would allow the latter to start work in developing the next-gen A8 processors that will be deployed with the 2014 iterations of iPhones and iPads, Apple Insider said.