Loud fan, little airflow
A fan can sound busy while intake dust or a blocked vent limits cooling. Compare the loud fan with poor airflow checks before assuming the processor needs new paste.
COOLING WORKSPACE / 01
Laptop overheating?
Read the signals.
Compare measured temperatures, identify your next cooling check, and see what the numbers can—and cannot—tell you about thermal throttling.
IDLE → LOAD → LIMIT
Temperature is a clue.
Context is the diagnosis.
01 / YOUR HARDWARE
Build a useful baseline
100°C is an editable example, not a safe limit for every laptop. Enter the limit for your exact processor and OEM configuration. Architecture labels never silently change it.
Noise is your observation, not a decibel measurement. Choose “Fanless” for a laptop without a fan.
Add clock telemetry (optional)
Use comparable sustained readings from the same workload and power profile. A change in clock speed does not prove a thermal cause.
02 / LIVE COMPARISON
Thermal stress meter
85% of chosen limit85% of chosen limit
Below chosen limit15.0°C headroom
This meter is peak °C ÷ chosen limit °C. It is a comparison scale, not a probability, material stress calculation, or measured throttling percentage.
Clock comparisonTelemetry needed
Paste & maintenance check
Start with workload and ventilation checks. Paste condition requires inspection and controlled comparison.
The stress meter is a temperature comparison, not a hardware diagnosis or a probability of failure.
Your next checks
- Compare the same sensor under the same workload, power mode, and room conditions.
- Place the laptop on a hard, open surface and check intake and exhaust clearance.
- Check background processes before changing cooling hardware.
- Record a repeatable baseline before deciding whether cooling service is needed.
Explore an illustrative fan curve
These example temperature/duty points illustrate an increasing curve. They are not validated settings for your device. Use manufacturer-supported profiles; this page never applies hardware settings or overrides thermal protection.
| Temperature | Example duty |
|---|---|
| 50.0°C | 30% |
| 70.0°C | 50% |
| 85.0°C | 75% |
| 95.0°C | 100% |
Fanless hardware has no fan curve. Improve placement and workload conditions instead.
Inputs stay in this browser when device storage is available.
03 / CHOOSE YOUR PATH
Follow the symptom, then the evidence
Hot only during games
CPU heat, GPU heat, and heat soak need separate observations. Use the gaming thermal throttling guide with clocks and frame-time behavior from the same test.
Still hot after cleaning
Compare the dust versus thermal paste decision path. Fan faults, heatsink contact, and thermal pads can mimic paste problems; a repaste is not a universal fix.
What this profiler measures
The profiler compares readings you enter. It does not connect to system sensors. Headroom is your chosen thermal limit minus the peak temperature. The stress meter uses the Celsius values, so switching to Fahrenheit changes the labels without changing the result.
When you enter a reference and current clock, observed reduction is 100 × (1 − current ÷ reference), with increases displayed as zero reduction. Clock changes can also come from power limits, workload changes, or normal boost behavior. Confirm thermal throttling with the telemetry tools and diagnostics for your model.
Why age is not a paste diagnosis
Device age helps prompt a maintenance review, but it cannot establish how much thermal paste has degraded. Installation, heatsink pressure, material, workload, and service history all matter. Start with safe laptop vent cleaning, compare controlled before-and-after readings, and check service coverage before a repaste.
Keep the test repeatable
Record room conditions, the sensor name, workload, power profile, and whether the laptop is charging. Let transient spikes settle before comparing sustained behavior. If the battery area is unusually hot, use the battery heat and swelling warning guide instead of continuing a load test. Apple Silicon owners can follow the MacBook overheating decision path, including checks suited to fanless models.
Manufacturer references
- Intel processor temperature guidance explains Tjunction limits and model-specific specifications.
- Apple notebook operating-temperature guidance covers placement and workload checks.
- Dell overheating troubleshooting covers airflow, diagnostics, and service escalation.
Educational comparison tool. No laboratory testing, manufacturer approval, component certification, or professional inspection is implied. Learn about the publication and correction process on the about page.