These are automatic services that run the the background of your operating system to maintain system health and keep things running smoothly. The first category of software we’ll discuss is system processes. We’ll talk about that later, but first let’s discuss the main cause of random fan revving: software. This second point assumes that there isn’t a hardware issue with your system, which is possible. A software process, or multiple processes, are probably creating a varying load on your CPU, which leads to varying speed in your fan to maintain a healthy CPU temperature. You have a fan controller that is capable of varying the speed of your fan. If you notice your fan speed constantly changing, it tells you two things:ġ. The first thing to understand about random revving is that it’s not really random even though it seems that way.įans spin to cool the CPU, and higher CPU usage requires a higher fan speed to keep the CPU temperature from getting too high. 4 Final Recommendations Random Fan Revving Cause #1: CPU Usage
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