How to Find the Best Fan Curve Settings

Having trouble with fan noise and inefficient cooling? This guide will help you navigate the process of finding the best fan curve settings for GPU and CPU. By utilizing fan control software, you can achieve optimal cooling performance while minimizing noise levels.

  • Fan curve settings play a crucial role in achieving optimal cooling and noise reduction.
  • Default fan settings often result in either excessive fan noise or inadequate cooling performance.
  • Installing fan control software is recommended for conveniently customizing fan curves.
  • Setting fan curves for CPUs and case fans involves static speeds and gradual linear increases.
  • GPU fan curves should balance thermals and noise based on personal preference.
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Why Default Fan Settings are Not Ideal

Default fan settings often lead to suboptimal cooling performance and excessive fan noise levels. Many users encounter the issue of fans constantly speeding up and slowing down during everyday use, creating a disruptive and unpleasant experience. In order to strike a better balance between noise and cooling, it is necessary to customize the fan curves and move away from the default settings.

By creating customized fan curves, you can set the fan speed to the specific needs of your system. This allows for more efficient cooling, as the fans can adjust their speeds based on the current temperature of the CPU and GPU. With default settings, the fans may overreact to minor temperature changes, causing unnecessary fluctuations and noise.

Customizing the fan curves also provides the opportunity to optimize the cooling performance based on your specific setup. Each system has unique characteristics, such as case airflow, fan configuration, and ambient temperatures. By taking these factors into account and fine-tuning the fan curves, you can achieve a more effective cooling solution that is tailored to your system.

My GPU MSI Afterburner Curve

This is a screenshot of my custom curve that I use for sometime now via MSI Afterburner for my RTX 4060. It works well, it’s mostly a case if you want cooler and louder graphics card or hotter and quieter fans.

MSI Afterburner RTX fan curve

When it comes to optimizing the cooling performance of your CPU, setting a fan curve is crucial. A fan curve determines the speed at which the CPU fan operates based on the temperature of the CPU. By customizing the fan curve, you can ensure efficient cooling while minimizing unnecessary noise generated by the fans. In this section, we will guide you through the process of setting a CPU fan curve that strikes the perfect balance between temperature control and noise reduction.

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A recommended approach to setting a CPU fan curve is to avoid using a linear, constantly ascending graph. The reason for this is that CPU temperatures fluctuate during different tasks and workload levels. Using a static fan speed until a specific temperature is reached, followed by a gradual increase in fan speed, provides better cooling efficiency.

The specific temperature breakpoints and fan speeds should be adjusted based on factors such as your case’s airflow, fan setup, and ambient temperatures. It’s important to experiment and find the ideal settings for your specific setup. Here’s a general example of how you can set a CPU fan curve:

Benefits of Using GPU Temperatures as the Temperature Source:

  • Directly responds to the heat generated by the graphics card
  • Prevents GPU overheating and performance throttling
  • Creates a cooling solution tailored to the GPU’s thermal needs

Benefits of Combining CPU and GPU Temperatures:

  • Provides a comprehensive temperature source for case fans
  • Considers the thermal needs of both the CPU and GPU
  • Helps maintain a balanced cooling solution

When it comes to setting a fan curve for your GPU, finding the right balance between thermals and noise is essential. GPUs tend to lower their clock speeds as temperatures rise to prevent overheating, but higher fan speeds result in increased noise levels. To optimize your GPU cooling performance while keeping noise levels in check, it is recommended to set the GPU fan curve based on your noise preference.

Your GPU fan curve should be adjusted to strike a balance between temperature control and noise reduction. Start by determining the maximum fan speed that you are willing to tolerate in terms of noise. This can vary from person to person, as some may prioritize a quieter system while others prefer maximum cooling at the expense of noise.

Once you have determined your maximum fan speed threshold, monitor your GPU temperatures during demanding tasks such as gaming or rendering. Adjust the fan curve by gradually increasing the fan speed at specific temperature intervals. This will ensure that the fan kicks in at the appropriate temperature to maintain optimal thermals without unnecessarily ramping up the noise levels.

Experimenting with different temperature breakpoints and fan speeds is crucial to finding the perfect GPU fan curve for your specific setup. Each system may have different cooling requirements based on factors such as case airflow, fan setup, and ambient temperatures. Don’t be afraid to fine-tune your fan curve settings until you achieve the desired balance between thermals and noise for your GPU.

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Temperature (°C)Fan Speed (%)

The table above demonstrates a sample GPU fan curve. At 40°C, the fan speed is set to 30%, gradually increasing by 10% for every 10°C rise in temperature. This provides a visual representation of how the fan speed adjusts at different temperature intervals to maintain optimal thermals while keeping noise levels relatively low.

Remember, setting a GPU fan curve is a personal preference that may vary depending on your specific needs and tolerance for noise. Take the time to experiment with different settings until you find the sweet spot that delivers the perfect balance between thermals and noise reduction for your GPU.

Temperature hysteresis and fans

When it comes to optimizing fan curve settings, one key factor to consider is hysteresis. Hysteresis plays a crucial role in preventing constant speed adjustments of the fans, providing a more stable and efficient cooling performance. By adding a bit of “lag” to the fans’ response, hysteresis ensures that the fan speed adjusts only when there is a significant change in temperature.

Adjusting the hysteresis settings allows you to fine-tune the fan speed adjustment according to your preference and desired fan behavior. A higher hysteresis value will result in slower fan speed adjustments, reducing the frequency of speed changes. On the other hand, a lower hysteresis value will lead to more frequent speed adjustments, providing a more responsive cooling solution.

It’s important to find the right balance when setting the hysteresis value. Too high of a hysteresis may cause the fans to react slowly to temperature changes, potentially leading to higher component temperatures. Conversely, too low of a hysteresis may cause the fans to constantly speed up and slow down, resulting in unnecessary noise and wear on the fan motors.

Hysteresis ValueFan Speed Adjustment
HighSlower response to temperature changes, fewer speed adjustments
LowFaster response to temperature changes, more frequent speed adjustments
Marcus Richardson

I love testing and writing about new tech. I'm also a gamer and an engineer. Check out my Twitter for keyboard stuff.

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