What you will achieve
Understand practical differences between Apple Silicon (M-series) and Intel Macs for apps, backups, and migration.
This guide focuses on decisions that bite after purchase: app compatibility, backup strategy, Recovery shortcuts, and whether your peripherals still have drivers. Use it before Migration Assistant or buying software licences tied to one architecture.
1) Identify your Mac
- Open Apple menu → About This Mac.
- Chip (M1/M2/M3/M4) means Apple Silicon; Processor with Intel branding means Intel.
- Intel Macs can run Windows via Boot Camp; Apple Silicon cannot boot Windows natively.
2) Apps and Rosetta
Apple Silicon runs arm64 apps natively. Intel apps use Rosetta 2. In Activity Monitor, check the Kind column: Apple is native, Intel is translated. Verify vendor support for audio interfaces, VPNs, and kernel extensions before migrating.
3) Hardware differences
- Apple Silicon uses unified memory — RAM is not upgradeable after purchase.
- Battery life and idle efficiency favour Apple Silicon laptops.
- T2 and Apple Silicon Macs support Activation Lock; Intel without T2 does not.
4) Recovery entry
Apple Silicon: hold the power button until Loading startup options. Intel: Command (⌘) + R at startup for Recovery. Never use an installer image built for the wrong architecture.
5) Migration notes
Migration Assistant copies data across architectures, but apps must match the destination chip. Budget time to replace Intel-only drivers and reinstall development toolchains on Apple Silicon.
6) Storage and external boot
Apple Silicon Macs with T2 or later require signed operating system trust chains for external startup disks. Intel Macs are more permissive about booting unsigned external clones, though FileVault and firmware passwords still apply. When buying external SSDs for backups, APFS on GUID is fine for both families — test boot from clone annually on Apple Silicon because security policy changes per macOS release.
7) Virtualisation and Windows
Parallels and VMware Fusion run Windows on Apple Silicon using arm64 Windows builds where available — not every x86 Windows app works. Intel Macs with Boot Camp run full x86 Windows natively, which matters for legacy CAD, older games, and some USB instruments with Windows-only control panels. If your workflow depends on one Windows executable, confirm arm64 or emulation path before switching chips.
8) Buying and support lifecycle
Apple Silicon Macs receive macOS updates longer in practice because they are the current focus. Intel Macs still get security updates for years but may miss newest features tied to Neural Engine or media engines. Check whether your peripherals list Apple Silicon drivers on the vendor download page — “works on Mac” often meant Intel-only through 2020.
Verify
About This Mac shows the expected chip; critical apps are Apple or Universal in Get Info.