Understanding Apple Silicon: The Evolution of Apple’s Custom Chip Architecture
Apple’s transition to its own custom-designed processors marks one of the most significant shifts in the company’s hardware strategy. By moving away from third-party processors, Apple has gained full control over the integration of hardware and software, fundamentally changing how its devices operate and perform.
What is Apple Silicon?
Apple silicon refers to a series of system on a chip (SoC) and system in a package (SiP) processors designed by Apple Inc. These chips primarily use the ARM architecture. Rather than relying on a traditional CPU and separate components, these SoCs integrate processing cores, graphics processing units (GPU), and cache memory into a single physical package to provide efficient computing functions.
While Apple designs the architecture, it is a fabless manufacturer. This means the actual production of the chips is outsourced to contract foundries, specifically TSMC and Samsung. The silicon design is led by Johny Srouji, Apple’s senior vice president for hardware technologies.
The Transition from Intel to Apple Silicon
Apple officially announced its plan to transition Mac computers from Intel processors to its own chips during WWDC on June 22, 2020. This strategic move allowed Apple to align the architecture of its Mac lineup with the chips already powering its mobile devices.
Key Milestones in the Mac Transition
- November 10, 2020: Apple unveiled the first Macs featuring Apple silicon, powered by the M1 chip.
- June 2023: The Mac lineup completed its full transition to Apple chips.
Apple Silicon Chip Families
Apple utilizes different chip series depending on the device’s requirements and form factor.
A-Series SoCs
The A-series is designed for mobile and compact devices. These chips are used in the iPhone, certain iPad models (including the entry-level iPad and iPad Mini), the Apple TV, and the MacBook Neo. They were also utilized in the original HomePod and the now-discontinued iPod Touch line.
M-Series SoCs
The M-series is the cornerstone of the modern Mac experience. According to Apple Support, the following models feature Apple silicon:
- MacBook Pro: Models introduced in 2021 or later, and the MacBook Pro (13-inch, M1, 2020).
- MacBook Air: Models introduced in 2022 or later, and the MacBook Air (M1, 2020).
- MacBook Neo
- iMac: Models introduced in 2021 or later.
- Mac mini: Models introduced in 2020 or later.
- Mac Studio: Models introduced in 2022 or later.
- Mac Pro: Models introduced in 2023.
How to Identify Apple Silicon on a Mac
Users can easily determine if their Mac uses Apple silicon by checking the system information:
- Navigate to the Apple menu () and select About This Mac.
- If the device has Apple silicon, the menu will show an item labeled Chip followed by the chip’s name.
- Intel-based Macs will instead show an item labeled Processor followed by the name of the Intel processor.
Key Takeaways
- Architecture: Apple silicon is based on the ARM architecture.
- Integration: Apple controls both the hardware and software integration for its SoC and SiP processors.
- Scope: These chips power nearly all Apple devices, including iPhone, iPad, Mac, Apple Watch, Apple TV, AirPods, AirTag, HomePod, and Apple Vision Pro.
- History: The first Apple-designed SoC was the A4, introduced in 2010.
Frequently Asked Questions
What is the difference between the A-series and M-series?
The A-series is generally used for iPhones and smaller iPads, focusing on mobile computing functions, while the M-series is designed for the higher performance demands of Mac computers.
Who manufactures Apple’s chips?
Apple designs the chips but outsources the physical production to foundries like TSMC and Samsung.
When did the Mac transition to Apple silicon end?
The Mac lineup completed its transition to Apple chips in June 2023.