Hardware Information CPU hardwareConcurrency architecture

CPU Information

Show how many logical processors the browser reports. Web pages cannot read your CPU model name.

Interactive tool

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Runs in your browser

Shows how many logical processors this browser reports, plus optional architecture hints. Web pages cannot read your CPU’s marketing model name. That is a browser privacy limit. No permission is required.

Reading CPU signals…

Permission status

Checked in your browser. DeviceHub does not store permission grants.

  • Special permission Not required

Live results

Metrics update as you run the test. Nothing is uploaded.

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Device information

Labels and capability details reported by your browser.

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Description

About CPU Information

Introduction

This page shows the number of logical processors the browser is willing to report, plus optional architecture hints. Browsers do not give web pages your CPU’s marketing model (for example “Ryzen 7 …” or “M3 Pro”). That protects privacy and is an intentional platform limit.

What this tool does

It displays hardware concurrency and, when available, simple architecture/bitness hints. It does not benchmark speed or list core temperatures.

When to use it

Use it to see what the web platform exposes for thread counts. Use your OS system info for the real CPU model and clocks.

How it works

Supported: concurrency on virtually all modern browsers. Optional architecture hints: mainly Chromium with Client Hints. Unsupported: a reliable SKU/model string in every browser. Permissions: none. Hardware: any PC or phone; counts may be privacy-clamped. Expected: a core/thread style number, not a full CPU datasheet.

Step-by-step instructions

  1. Open CPU Information.
  2. Read the logical processor count.
  3. If architecture hints appear, treat them as optional.
  4. Confirm the marketing model in your operating system if needed.

Common problems

Counts lower than Task Manager can be privacy clamping. Missing model name is normal for the web.

Privacy explanation

Only coarse hardware hints are read. Nothing is uploaded.

Runtime principles

Built for the browser

What happens when you run this test — without downloads or accounts.

  1. 01

    Runs in your browser

    CPU Information uses standard web APIs — no install, extension, or desktop app required.

  2. 02

    Reads what the browser allows

    Results come from events and capability signals the web platform exposes for this session.

  3. 03

    Private by default

    Input and diagnostic values stay in your browser session for display — nothing is sold as media.

Compatibility

Supported browsers

Expected support for modern engines. Individual APIs may still vary by device.

  • Chrome

    supported

    Latest stable

  • Firefox

    supported

    Latest stable

  • Safari

    supported

    Latest stable

  • Edge

    supported

    Latest stable

Devices

Supported devices

Hardware and form factors this browser test is designed to exercise.

  • Desktop browsers

    Chrome, Firefox, Safari, and Edge on Windows, macOS, Linux.

  • Laptops

    Reports viewport, DPR, and capability signals for the active session.

  • Phones & tablets

    Mobile browsers with responsive viewport and touch hints.

Privacy

Your data stays with you

CPU Information is built privacy-first. Diagnostics run in your browser session whenever web APIs allow.

Read our privacy policy

Troubleshooting

Common problems

Quick fixes before you dig into FAQs.

No CPU model name appears
Browsers do not expose true CPU model or SKU names to ordinary web pages. Use concurrency and optional UA-CH architecture hints only, check OS system info for marketing model strings.
Architecture field is blank
User-Agent Client Hints architecture is available only when the browser provides it and may require Client Hints negotiation. Absence is normal on many builds, not a broken detector.
Core count looks too low
navigator.hardwareConcurrency can be clamped for privacy or differ from Task Manager logical processors. Compare CPU Information and note browser name beside the value.

FAQ

Frequently asked questions

Structured answers for users and FAQ rich results.

Browse FAQs
Why is there no CPU model name?
Browsers do not expose marketing model strings to ordinary web pages, mainly for privacy.
What do browsers expose?
A logical processor count, and sometimes coarse architecture hints.
What do they not expose?
Exact SKU, clock speeds, cache sizes, or temperature.
Which browsers work?
All modern browsers show a processor count. Extra hints are most common in Chrome/Edge.
Permissions or hardware?
None. Any device runs the page; numbers may be reduced for privacy.
What should I expect?
A simple core/thread count useful for web context — not a full CPU-Z report.

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Updates coming soon

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Release notes

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