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Speed Fan 4.40 (Portable)

Speed Fan 4.40 (Portable): A Free System Monitor for Windows

If you are looking for a free and easy way to monitor and control the temperature, fan speed, and voltage of your computer components, you might want to check out Speed Fan 4.40 (Portable). This is a lightweight and portable version of the popular Speed Fan software, which can run from a USB drive or any other removable media without installation.

What is Speed Fan?

Speed Fan is a hardware monitor software that can access temperature sensors, fan speeds, and voltages in computers with hardware monitor chips. It can also read S.M.A.R.T information from hard drives, show CPU usage, chipset information, core temperatures, change clock speed, and analyze voltages . Speed Fan can work with several remote network computers simultaneously, which is useful for LAN parties or when you want to monitor multiple PCs using only one keyboard, mouse, and screen.

Speed Fan 4.40 (Portable)

What are the benefits of using Speed Fan 4.40 (Portable)?

Speed Fan 4.40 (Portable) has the same features as the regular version of Speed Fan, but with some advantages. First of all, it does not require any installation or configuration steps; you just need to download the ZIP file from the official website, extract it to your preferred location, and run the executable file. Second, it does not leave any traces on your system registry or hard drive; you can delete it anytime you want or move it to another device. Third, it is compatible with Windows 9x, ME, NT, 2000, 2003, XP, Vista, Windows 7, 2008, Windows 8, Windows 10, Windows 11 and Windows Server 2012, including 64-bit versions.

How to use Speed Fan 4.40 (Portable)?

Using Speed Fan 4.40 (Portable) is very simple and intuitive. Once you run the program, it will automatically detect your hardware and display the readings of your components in the main window. You can see the current temperature, fan speed, and voltage of your CPU, hard drive(s), motherboard, graphics card, and other devices. You can also see the S.M.A.R.T status of your hard drives and the CPU usage of your system.

If you want to control the fan speed of your components, you can click on the Configure button and go to the Fans tab. Here you can see the available fans in your system and their current speed in RPM (revolutions per minute). You can also see the minimum and maximum speed that each fan can reach. To change the fan speed manually, you can drag the slider next to each fan or enter a specific value in the box below. You can also set up automatic fan speed control based on the temperature of your components by clicking on the Advanced tab and selecting the desired options.

If you want to monitor your system remotely or access other advanced features of Speed Fan, you can click on the Online button and go to the Options tab. Here you can enable or disable remote access via HTTP or IPMI protocols, set up email alerts for critical events, log data to a file or a database, customize the user interface, and more.


Speed Fan 4.40 (Portable) is a powerful and versatile tool that can help you keep an eye on your computer's health and performance. It can monitor and control the temperature, fan speed, and voltage of your components, as well as read S.M.A.R.T information from your hard drives and show CPU usage. It can also work with remote network computers and offer many advanced options for customization and automation. Best of all, it is free and portable; you can run it from any device without installation or configuration.

If you are interested in trying out Speed Fan 4.40 (Portable), you can download it from [here]. If you have any questions or feedback about this software, you can visit [the official website] or [the forum].


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