SpeedFan

SpeedFan

SpeedFan is a free, open source fan and temperature monitoring and control software for Windows. It allows users to monitor CPU and system temperatures, control fan speeds, set temperature alarms and more to keep computers cool and quiet.
SpeedFan image
fan-control temperature-monitoring hardware-sensors

SpeedFan: Free Fan Control and Temperature Monitoring for Windows

Monitor CPU and system temperatures, control fan speeds, set temperature alarms and more with this free, open source software

What is SpeedFan?

SpeedFan is a free, open source utility for Microsoft Windows that monitors voltages, fan speeds and temperatures in computers with hardware monitor chips. It was originally written by Alfredo Milani Comparetti in 1999 and has since become one of the most popular and trusted fan and temperature monitoring tools for PCs.

Some of the key features of SpeedFan include:

  • Real-time monitoring of temperature sensors, fan speeds and voltages from various hardware chips and components in the computer.
  • Temperature-based automatic fan speed control to keep components cool.
  • Custom fan speed profiles that can be set to optimize cooling or reduce noise.
  • Configurable visual and audible warnings and alerts when temperatures and thresholds are exceeded.
  • Logging and graphing of monitored values to track thermal performance over time.
  • Support for setting manual fan speeds if desired.
  • Control of other components and devices besides fans that have monitoring capabilities.

With robust monitoring, logging, graphing and control capabilities, SpeedFan gives users granular and customizable insight and regulation over the thermal characteristics and performance of a Windows computer. It can help optimize cooling, reduce noise, prolong hardware lifespan and prevent overheating problems.

SpeedFan Features

Features

  1. Monitors CPU and system temperatures
  2. Controls fan speeds to optimize cooling
  3. Sets customizable temperature alarms
  4. Graphs temperatures over time
  5. Supports GPU temperature monitoring
  6. Controls system voltages
  7. S.M.A.R.T. hard disk monitoring

Pricing

  • Free
  • Open Source

Pros

Free and open source

Lightweight and easy to use

Wide range of monitoring options

Effective at reducing noise by controlling fans

Prevents overheating through temperature alarms

Cons

Setup can be tricky for beginners

Limited to Windows only

Fan control is manual and not automated

Some hardware may not be fully compatible


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