There are ONLY a few places that can produce 5nm and 7nm chips … and TSMC is one of them.
Taken from TPU … Apple has recently announced its transition from Intel-based Mac computers to custom Arm-based Apple silicon equipped Macs. The speculations for such transition have lasted a few years and we finally got that confirmation. So the question remains: who will manufacture Apple’s custom processors for Arm-based Macs? The answer is pretty simple. It is TSMC who will again become Apple’s main supplier of silicon. With its broad offerings of the latest silicon nodes, it was no brainer choice for Apple. Combined with the history of collaboration with Apple, TSMC was the only choice for new Apple silicon. Whatever the company will use the new 5 nm node or use the “old” 7 nm one, the question remains.
TSMC expects to see huge orders from Apple in the second half of 2021, for Apple silicon, so Apple will become perhaps the biggest customer of TSMC. It is also worth pointing out that Apple will be using ASMedia’s USB controller for Arm-based Macs, as the original report suggests.