Software monitoring tools operate within the device they're monitoring. These systems directly utilize the sensors built into the system, providing more detailed and accurate information than less-expensive monitoring systems customarily provide. Some hardware-based system monitors also allow direct control of fan speeds, allowing the user to quickly customize the cooling in the system.Ī few very high-end models of hardware system monitor are designed to interface with only a specific model of motherboard. With either approach to gathering data, the monitoring system displays information on a small LCD panel or on series of small analog or LED numeric displays. Customarily these occupy one or more drive bays on the front of the computer case, and either interface directly with the system hardware or connect to a software data-collection system via USB. Less common are hardware-based systems monitoring similar information. data, fan speeds, and the voltages being provided by the power supply. Other possible displays may include the date and time, system uptime, computer name, username, hard drive S.M.A.R.T. They are also used to display items such as free space on one or more hard drives, the temperature of the CPU and other important components, and networking information including the system IP address and current rates of upload and download. ![]() These monitoring systems are often used to keep track of system resources, such as CPU usage and frequency, or the amount of free RAM. Software monitors occur more commonly, sometimes as a part of a widget engine. Īmong the management issues regarding use of system monitoring tools are resource usage and privacy. SpeedFan can find almost any hardware monitor chip connected to the 2-wire SMBus Serial Interface and to the ISA BUS.A system monitor is a hardware or software component used to monitor system resources and performance in a computer system. The most used are National PC87366 and all of SMSC LPC SuperIO chips. ![]() SpeedFan can automatically detect them and use their features. Some SuperIO chips include temperature sensors too. Winbond W83697HF, Analog Devices ADT7463, SMSC EMC6D102, ITE IT8712F, National LM85C and Maxim MAX6650 are very good candidates. If your BIOS was programmed to setup such chips this way you can still try to use SpeedFan's Advanced Configuration to revert to manual (software controlled) mode. Some chips can even be programmed to vary fan speeds without any additional software intervention. From one of the very first hardware monitor chips that could be found in standard PCs, the National Semiconductor LM75 (and all of its clones, like the Philips NE1617 and the Philips NE1618 or the Maxim MAX1617) or the Analog Devices ADM1021, such chips have been greatly improved, both in their precision and in their capabilities.Ĭurrent chips can monitor fan speeds, voltages and control fan speeds by using PWMs (Pulse Width Modulation). Several sensors, like Winbond's and the AS99127F support fan speed changing, as well as others from Maxim, Myson, Analog Devices, National Semiconductor and ITE, but the hardware manufacturer must have connected the relevant pins to some additional, yet trivial, circuitry. SpeedFan can change the FSB on some hardware (but this should be considered a bonus feature). By properly configuring SpeedFan, you can let it change fan speeds based on system temperatures. ![]() SpeedFan monitor temperatures from several sources. SpeedFan works with Windows 9x, ME, NT, 2000, 2003, XP, Vista, Windows 7, 2008, Windows 8, Windows 10, Windows 11 and Windows Server 2012. What operating systems are compatible with SpeedFan? SpeedFan can also read S.M.A.R.T information from your hard drives, show CPU usage, chipset information, core temperatures, change clock speed, and analyze voltages. What other features does SpeedFan offer besides controlling fan speed? Once installed, SpeedFan will automatically detect if your hardware is compatible and advanced features are presented. SpeedFan is able to control the fan speed of most fan makes and models, but this will ultimately depend on your motherboard's sensor chip and capabilities. Can SpeedFan control the fan speed of any fan? ![]() SpeedFan is a hardware monitor software that can access temperature sensors, but its main feature is that it can control fan speeds – depending on the capabilities of your sensor chip and your hardware – according to the temperatures inside your PC, thus reducing noise and power consumption.
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