Windows 11 Arm64 vs x64: What's Different and Which to Choose

Windows 11 comes in two processor editions: Arm64 (for Snapdragon, NVIDIA RTX Spark and other Arm chips) and x64 (for Intel and AMD). The desktop, settings, browsers, Store and most everyday workflows are identical. The differences are in compatibility with specialized software, performance character and battery life — and they are smaller in 2026 than ever, but not zero.

The five differences that matter

1. App compatibility. On x64 Windows, essentially every Windows program ever written runs. On Arm64, as of October 2026 9,177 of 9,215 tracked titles in our database run — natively or through the Prism emulator — but a small set (kernel drivers, some VPNs, kernel-level anti-cheat) does not.

2. Performance character. Native Arm64 apps on current Snapdragon X2 and RTX Spark laptops compete with mainstream x64 laptops, typically with better efficiency. Emulated x64 apps give up some performance to the translation layer, so heavy x64 workloads (big compiles, older games) usually run slower than on equivalent x64 hardware. Exact results vary by device, power envelope, app and workload — check reviews for the specific model.

3. Battery life. This is Arm’s structural advantage: native-first workloads typically last noticeably longer on a charge. The gap narrows when most of your workload is emulated.

4. Drivers and peripherals. Windows on Arm only loads Arm64 drivers. Printers, scanners and audio interfaces usually work through class drivers; niche hardware with x64-only drivers does not. See peripherals and drivers.

5. Upgrade paths. x64 PCs follow the standard annual enablement-package cadence (24H2 → 25H2 → 26H2). New Arm silicon ships with the separate 26H1 branch, which cannot upgrade in place to 26H2.

Which should you choose?

Choose Arm64 if your day is browsers, Office, video calls, creative suites (now largely native — including the Adobe video apps) and you value battery life. Check your must-have apps in the database first; if every one is native or emulated-clean, an Arm laptop is a mainstream-safe choice in 2026.

Stick with x64 if you depend on software with kernel drivers (some enterprise VPN/endpoint suites, older audio interfaces) or play games whose anti-cheat has no Arm64 client — or you run Windows in a VM on non-Arm hardware, where only x64 images apply.