What should I set fan curves at?

Answered by Robert Flynn

When it comes to setting fan curves for your CPU, it’s important to strike a balance between cooling performance and noise levels. A well-configured fan curve can help keep your CPU temperatures in check while minimizing the noise generated by your cooling system. Let’s dive into the details of how to set up an effective fan curve.

To begin with, it’s a good idea to set a baseline fan speed that ensures adequate cooling under normal operating conditions. Start by setting your fans to run at a relatively low speed when the CPU is at idle or experiencing light workloads. A fan speed of around 45% is a reasonable starting point for this.

The next step is to determine the temperature at which you want your fans to start ramping up their speed. Adding a few degrees Celsius to the maximum recorded temperature is a practical approach. For instance, if your CPU’s maximum recorded temperature is 80 degrees Celsius, you can set the second point on your fan curve to activate when the CPU reaches 85 degrees Celsius.

Once the second point is established, you can gradually increase the fan speed from the baseline as the CPU temperature rises. A linear increase is often preferred, as it provides a predictable and consistent response. However, you can adjust this to suit your preferences. For example, you might choose to have a more aggressive fan curve with higher speeds at lower temperatures if you prioritize maximum cooling performance, even if it means more noise.

As an example, let’s consider a linear fan curve that starts at 45% fan speed when the CPU temperature is at or below 65 degrees Celsius. As the temperature increases, you can incrementally raise the fan speed. For every additional 5 degrees Celsius increase, you might add 10% to the fan speed. Therefore, at 70 degrees Celsius, the fan speed would be 55%, at 75 degrees Celsius, it would be 65%, and so on.

It’s important to note that the upper limits of fan speed should be set with caution. While higher speeds can provide better cooling, they can also result in increased noise levels. Finding the right balance between cooling and noise is subjective and depends on your specific needs and tolerance.

Remember, these settings are not set in stone and can be adjusted based on your system’s behavior and your personal preferences. It’s a good idea to monitor your CPU temperatures and fan speeds under different workloads to ensure that your cooling system is effectively maintaining optimal temperatures.

Setting fan curves involves finding the right balance between cooling and noise levels. Starting with a baseline fan speed, you can establish a second point on the curve by adding a few degrees Celsius to the maximum recorded temperature. From there, a linear increase in fan speed can be implemented, gradually ramping up as the CPU temperature rises. However, these settings are customizable and can be adjusted to suit your specific requirements and preferences. Regular monitoring of temperatures and fan speeds will help you optimize your cooling system for optimal performance.