Launching the program on our test PC, for instance, displayed a host of useful information: CPU type, the temperature of each core, the system temperature, the speeds of all four system fans, and voltages including Vcore, +12V and AVcc.Ĭlick the Chart tab and you're able to plot graphs showing how these figures change over time, very useful if your PC is misbehaving and you think it might be overheating. And it's able to control fan speeds according to the temperature of other components, helping you to reduce system noise. SpeedFan can be minimized to the tray and is compatible with Motherboard Monitor 5.SpeedFan is a system monitoring tool that can detect and display your PCs fan speeds, motherboard and hard drive temperature, system voltages, hard drive status and more. SpeedFan works fine with Windows 9x, ME, NT, 2000, 2003 and Windows XP. SpeedFan can find almost any hardware monitor chip connected to the 2-wire SMBus (System Management Bus, a subset of the I2C BUS) Serial Interface and to the ISA BUS. This means that if you have, say, a Winbond W83782D on a BP6 then you're ok, but not every motherboard with such an hardware monitor chip will be able to change fan speeds. 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 even change the FSB on some hardware (but this should be considered a bonus feature).Īt the lowest level, SpeedFan is an 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. SpeedFan supports EIDE, SATA and SCSI disks. info for those hard disks that support this feature and show hard disk temperatures too, if supported. SpeedFan is a freeware program that monitors voltages, fan speeds and temperatures in computers with hardware monitor chips.
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