ThermalStats review
Free browser and CLI CPU/GPU stress tests with live temperatures and community comparisons.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
ThermalStats is a free PC stress-testing tool for builders and enthusiasts who want to check CPU and GPU cooling. It offers browser-based tests using WebGPU and Web Workers, plus a CLI for Windows and Linux. Users can run CPU, GPU, or combined workloads, view live temperatures, and set a test duration. Automatic hardware detection and diagnostic mode—which checks sensor access, drivers, and possible blockers—help explain whether a system is ready to run a test.
Its strongest fit is temperature comparison rather than broad system validation. The site compares readings with results for similar hardware, including breakdowns by hardware and cooling type. The CLI can submit verified results to the community database, giving users a way to place a temperature reading in context. Browser tests provide a separate route for running CPU and GPU loads, while the CLI adds hardware detection and temperature readings. This combination suits users focused on cooling behavior; it should not be mistaken for a whole-system testing suite.
ThermalStats is free, with no paid tiers described. It is open source and available as a web tool and desktop CLI, with email support. The CLI’s listed downloads cover Windows and Linux, while macOS is described as coming soon on the test page. The tool is newly founded, so buyers looking for a longer-established track record or broader system coverage may prefer a more established whole-system testing alternative. For solo users and small PC-building projects that want focused CPU/GPU load checks and temperature comparisons, ThermalStats is a practical starting point.
ThermalStats pros and cons
- Where it wins
- Runs CPU, GPU, or combined stress tests in browser or CLI
- Displays live CPU and GPU temperatures and detects hardware
- Compares verified CLI results with similar hardware
- Where it doesn't
- CLI downloads are listed for Windows and Linux only
- Browser tests rely on WebGPU and Web Workers
- Focused on CPU/GPU cooling, not whole-system testing
ThermalStats fact sheet, pricing and score →
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