SpeedFan is a powerful tool designed to monitor and control computer hardware, especially the fan speeds and temperatures. Developed by Alfredo Milani Comparetti, it provides users with detailed insights into the system's health and performance. SpeedFan reads the temperature sensors on various components such as the CPU, GPU, and hard drives, offering real-time data to help prevent overheating and hardware damage.

One of the standout features of SpeedFan is its ability to adjust fan speeds based on system temperatures. This dynamic control helps maintain optimal cooling efficiency while minimizing noise. Users can set custom temperature thresholds and fan speed curves, tailoring the cooling performance to their specific needs. Additionally, SpeedFan supports S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology) for hard drives, enabling early detection of potential drive failures.

The software also offers advanced logging capabilities, allowing users to track temperature and fan speed data over time. This historical data can be crucial for diagnosing intermittent issues or understanding long-term trends. With its comprehensive feature set and customizable options, SpeedFan is a valuable tool for anyone looking to optimize their system's cooling and ensure reliable operation.

Key Features:

• Temperature Monitoring: Tracks temperatures of various components like CPU, GPU, and hard drives.
• Fan Speed Control: Adjusts the speed of fans to optimize cooling and noise levels.
• Voltage Monitoring: Monitors the voltage of system components to ensure stability.
• SMART Analysis: Provides detailed information and analysis of hard drive health through SMART data.
• Event Logging: Records changes and events for troubleshooting and analysis.
• System Charts: Displays data in charts for easy visualization and understanding.
• Remote Monitoring: Supports remote access and monitoring of system performance.
• Customizable Profiles: Allows users to create and switch between different fan speed and temperature profiles.
• Support for Various Hardware: Compatible with a wide range of sensors, motherboards, and fan controllers.

• Added full support for Nuvoton NCT6791D (including fan control)
• Improved external (USB) hard disk detection (some were not properly detected on Windows 8)
• Added a new method to access hard disks connected to 3ware RAID controllers (works on 64 bit systems too)
• Added support for Intel core temperature (Family 06h Model 3Ch)
• Added support for Intel core temperature (Family 06h Model 3Eh)
• Added support for AMD Family 15h temperature
• Added support for AMD Family 16h temperature
• Added support for Intel 8 Series SMBus
• Added support for Intel 8 Series Mobile SMBus
• Added support for Intel 9 Series SMBus