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ARM64 vs x64 vs x86: Which Windows Installer Should You Download?

Compare ARM64, x64, and x86 before choosing a Windows app installer or Windows 11 25H2 image: x64 for Intel or AMD, ARM64 for Windows on Arm, and x86 only for legacy 32-bit apps or Windows 10.

Quick answer

For Windows app installers, choose x64 for most Intel or AMD PCs, ARM64 only for Windows on Arm, and x86 only for legacy 32-bit apps. Check Settings > System > About before downloading. Windows 11 25H2 itself is 64-bit only: use Microsoft's x64 media for a compatible Intel or AMD PC and its separate Arm64 image for a compatible Arm PC.

Last updated 2026-09-07

Windows x64 vs ARM64

The difference is the processor family. x64 is for normal 64-bit Intel and AMD Windows PCs. ARM64 is for Windows on ARM devices. If you install an ARM64 build on an Intel or AMD PC, it will not be the right installer.

Check your Windows system type

Open Settings > System > About and read System type. If it says x64-based processor, choose x64. If it says ARM-based processor, choose ARM64. If you need a slower walkthrough, use the Windows 32-bit vs 64-bit guide.

What the labels mean

  • x64, 64-bit, amd64: the normal choice for Intel and AMD Windows PCs.
  • ARM64, arm64, aarch64: for Windows on ARM devices.
  • x86, 32-bit: for older 32-bit Windows installs or legacy app compatibility.

When not to choose ARM64

Do not choose ARM64 just because the name sounds newer. ARM64 is for a different processor family. On a normal Intel or AMD PC, the x64 installer is the correct build.

Examples in the What-Version catalog

Windows download pages in the catalog include apps where choosing the right installer matters, such as Python downloads, Node.js downloads, Visual Studio Code downloads, Git for Windows downloads, Microsoft PowerToys downloads, and Windows Package Manager downloads. For version checks, use pages such as latest Python version, latest Node.js version, or latest PowerToys version.

What if the app offers only x64?

That is common. Most current Windows desktop apps target 64-bit Intel and AMD PCs first. Windows on ARM may still run some x64 apps through emulation, but drivers, virtualization tools, shell extensions, and security software should use native ARM64 builds when the vendor provides them.

Official sources

Match the system label to the installer

Diagram: x64-based processor means x64 or amd64; ARM-based processor means ARM64; 32-bit Windows means x86.
A decision diagram, not a Windows screenshot. Read both operating system and processor fields.
Installer examples: cloudflared windows-amd64 for x64, VS Code arm64 for ARM64, cloudflared windows-386 for x86.
Examples checked on 5 September 2026: VS Code User Setup ARM64 1.136.1 and cloudflared x64/x86 assets. Use VS Code downloads and the official release assets for availability. The package extension does not determine CPU compatibility.

Frequently Asked Questions

Should I download x64 or ARM64 on Windows?

Choose x64 for most Windows PCs with an Intel or AMD processor. Choose ARM64 only when Settings > System > About identifies an ARM-based processor, such as a Snapdragon-based Windows device.

Is x64 the same as amd64?

Yes for Windows installer choices. Both labels usually mean 64-bit Windows for Intel and AMD processors.

Is x86 the same as 32-bit?

On Windows download pages, x86 almost always means 32-bit. Use it only when your installed Windows is 32-bit or the vendor specifically requires it.

Can Windows on ARM run x64 apps?

Modern Windows on ARM can run many x64 apps through emulation, but native ARM64 builds are better for performance-sensitive apps, drivers, and system tools.

Should I download x64, ARM64, or x86 for Windows 11 25H2?

Use Microsoft's conventional Windows 11 media for a compatible 64-bit Intel or AMD PC and the separate official Arm64 ISO for a compatible Arm PC. Windows 11 25H2 has no 32-bit x86 edition. Matching the architecture does not replace the TPM 2.0, Secure Boot, processor, memory, storage, and device-driver checks.

Evidence & limits

Sources and scope

This guide answers

Should I download ARM64, x64, or x86 on Windows?

What this cannot prove

This guide separates app-installer labels from Windows installation media. An architecture match is necessary, but it does not prove that a PC meets every Windows 11 25H2 hardware requirement or that a driver, plug-in, add-in, virtualization tool, or security product is compatible.

Editorial review by What-Version Editorial · reviewed

Official and methodology sources

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