SpeedFan 4.50 / 4.51 Beta 2

View and tweak settings for your computer's fan speed, voltage and chip temperature using this lightweight utility with support for log files
SpeedFan - You can use the use the main window of the application to view all your readings.
  5 Screenshots
Designed for hardcore users who frequently hog the system's resources (such as video gamers and graphic designers), SpeedFan offers a simple and effective solution to keeping track of the hardware's temperature level and change the fan speed when it gets too high. It is capable of evaluating S.M.A.R.T. attributes as well.

Speedy setup and classical GUI

Installing SpeedFan takes minimal time and effort, since there are no customization options available. The utility is packed in a classical interface made of a single window split into multiple frames, where users may seamlessly examine information and make the necessary changes concerning the fan speed.

System tray indicator and clock tweaks

At startup, it creates an icon in the notifications area which displays the current GPU, hard drive and core temperatures when hovering the mouse; the icon's color indicated the current temperature status. The first panel monitors these components and allows users to enable the automatic fan speed based on the app's own optimization parameters.

When it comes to the system clock, users may select the motherboard and clock name, pick a configuration from the list and enable automatic control by setting rules based on low CPU usage and time limit. S.M.A.R.T. attributes can be investigated in the last tab to find out various indicators of reliability and anticipate system failures.

Extensive configuration options and logging

It is possible to select the exclude components shown in the system tray area, tweak fan, voltage and speed settings, point out fan controllers to take into account, customize the tray icon colors and font, as well as pick the temperature measurement unit between Celsius and Fahrenheit. Program activity can be recorded to log files, a feature which comes in handy when planning to leave the PC unattended. They can be immediately sent via email.

Evaluation and conclusion

SpeedFan has a very good response time and shows accurate information. It offers extensive details concerning the hard disk and CPU temperature levels, allowing users to adjust settings to suit their own preferences. Due to the technical nature of the app, only experienced users should work with SpeedFan, since they might otherwise damage the PC.

Reviewed by , last updated on September 2nd, 2014

our in-depth analysis
Editor's Review
file size:
2.1 MB
license type:
developed by:
Alfredo Milani-Comparetti
operating system(s):
Windows All
C: \ System \ System Info
download hub:
System Information Viewers ( + 2 others )
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user rating 601



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What's New in version 4.51 Beta 2
  • Added support for Nuvoton NCT6683D.
  • Added full support for Fintek F71811U.
  • Fixed Fintek F71808A PWM MODE setting.
  • Added a sanity check while scanning DMI and ACPI tables.
read full changelog
5 Screenshots
SpeedFan - This is how you can set your clock speed from the second tab of the software.SpeedFan - View the Chipset, SMBus base address and revision from the following tab of the program.SpeedFan - You can view all your S.M.A.R.T. readings from the dedicated tab found in SpeedFan.SpeedFan - The last tab of the program allows you to view the temperature charts for your CPU and HDD.

Application description

The main viewing purpose of SpeedFan is to show its user what's really going in their machine. When minimized, a tempe...

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