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. And it’s able to control fan speeds according to the temperature of other components, helping you to reduce system noise. Click 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.
Leave SpeedFan running in the background, run something that will exercise your system a fast 3D game, say – then check the SpeedFan chart to find out exactly what’s going on. Its S.M.A.R.T. tab is supposed to show you the status of your hard drives, assuming they support the S.M.A.R.T. monitoring system: you’ll get to see details like the current drive temperature, spin-up time, read errors and so on.
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