Rumors indicating that Apple wants to move its Mac lineup to the ARM-CPU & # 39; are designed built-in, have been swirling for more than a year. Come to think of it, these rumors began as far back as 2012. It has apparently been a matter of "if" Apple would bid on the x86-64 ISA, but "when" would this change take place. These rumors have spun up once again, as the company has hired former ARM, Intel and AMD system architect Mike Fillipo last month, according to his LinkedIn profile.
Filippo, an alumnus from the University of Oklahoma and Rice University, has an impressive history in system design. He started at AMD, where he was involved in the design of several generations of Athlon and Opteron processors. After that, from 2004 to 2009, he was the leading architect an HPC chip for a 24-core, 96-wire behemoth SoC and played a role in multiple cache designs. Most recently at ARM, Filippo was the leading architect for many of the company's processor cores, including the A76, the next generation of high-end mobile kernel code name "Hercules" and several infrastructure and server-focused CPUs such as Neoverse N1
Probably, Philip's employment is a bit delayed to work on designs that have been smoked to launch next year. These designs typically take a while to complete. For example, Jim Keller famously discussed AMD's Zen microarchitecture at the AMD's Innovation Summit about three full years before Ryzen was launched. The timing might indicate that Apple's plans are not as far as previous rumors, or it could not indicate anything at all. Apple's design team was an IPC power plant long before this appointment, and Filippo has experience with system architecture that extends beyond just ARM ISA.