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.

Key Takeaways:

  • 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 tailor 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.

“Customizing the fan curves allows for a more balanced and efficient cooling solution, ensuring optimal performance without compromising on noise levels.”

To summarize, default fan settings are not ideal due to their tendency to generate excessive noise and provide inadequate cooling. By customizing the fan curves, you can achieve a better balance between noise and cooling, resulting in a more pleasant and efficient system. The next section will explore the importance of utilizing fan control software for easy and convenient customization of the fan curves.

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

The Importance of Fan Control Software

When it comes to optimizing your fan curve settings for optimal cooling and noise reduction, fan control software plays a crucial role. This software allows you to easily set and adjust fan curves without the need to constantly restart your system or access the BIOS. By installing fan control software, such as Fan Control or MSI Afterburner, you gain the flexibility and convenience of customizing your fan curves to suit your specific needs.

Installation and Ease of Use

Installing fan control software is a straightforward process that usually involves downloading the software from the official website and following the installation guide. Fan Control, for example, is a free and open-source software that is regularly updated, ensuring compatibility with the latest hardware and providing improved performance over time. With its user-friendly interface, you can effortlessly adjust fan speeds, set temperature breakpoints, and create custom fan curves tailored to your preferences.

Whether you’re a beginner or an experienced user, fan control software offers an intuitive and user-friendly experience. You can easily navigate through the software’s features and customize your fan curves with just a few clicks. The ability to fine-tune your cooling setup and strike the right balance between noise and performance has never been easier.

“Fan control software allows for precise customization of your fan curves, resulting in optimal cooling performance and noise reduction.”

 Fan Control SoftwareMSI Afterburner
InstallationSimple and straightforward processSimple and straightforward process
Ease of UseIntuitive interface with user-friendly featuresIntuitive interface with user-friendly features
CustomizabilityAllows for precise customization of fan curvesAllows for customization of fan curves
CompatibilityRegular updates for improved hardware compatibilityRegular updates for improved hardware compatibility

As shown in the table above, both Fan Control and MSI Afterburner offer installation simplicity, user-friendly interfaces, and compatibility with a wide range of hardware. However, Fan Control provides more extensive customizability, allowing for precise adjustments to your fan curves for optimal cooling performance.

With the help of fan control software, you can take full control of your cooling system, achieving the perfect balance between noise reduction and efficient cooling. Install the software, customize your fan curves, and enjoy a quieter and cooler computing experience.

Setting a CPU 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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Temperature Breakpoints and Fan Speeds

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:

Temperature (°C)Fan Speed (%)

This table showcases a fan curve that maintains a relatively low fan speed (30%) when the CPU temperature is below 40°C. As the temperature rises, the fan speed gradually increases to 40%, 60%, and finally 80% when the temperature exceeds 80°C. These temperature breakpoints and fan speeds can be modified based on your preferences and system requirements.

Setting Case Fan Curves

When it comes to setting case fan curves, it’s important to consider the unique cooling needs of your system. Optimal airflow under load and stable noise levels during light usage can be achieved by implementing appropriate fan curves. For this purpose, a gradual linear increase in fan speed after reaching a specific temperature breakpoint is recommended.

By setting static fan speeds up to a certain temperature, you can ensure consistent airflow and cooling performance. This allows for efficient heat dissipation while maintaining a stable noise level. The specific fan speeds and temperature breakpoints can be adjusted based on your personal preference for noise level and component temperatures.

Determining Fan Speeds and Temperature Breakpoints

It is important to take into account various factors when determining the ideal fan speeds and temperature breakpoints for your case. Consider the type and number of fans installed, the airflow capabilities of your case, as well as the ambient temperatures in your environment. Experiment with different settings to find the optimal balance between cooling performance and noise levels that suits your specific setup.

Temperature BreakpointsFan Speeds
Below 40°C800 RPM
40-50°C1000 RPM
50-60°C1200 RPM
Above 60°C1500 RPM

In the example table above, the fan speeds gradually increase as the temperature rises. This provides a balance between cooling efficiency and noise output. However, feel free to adjust the fan speeds and temperature breakpoints based on your specific requirements and system components.

Choosing the Temperature Source for Case Fans

When setting up the fan curves for your case fans, it is crucial to select the right temperature source to ensure efficient cooling. The temperature source determines how your case fans respond to changes in temperature, helping to maintain optimal airflow and temperature levels inside your PC.

One popular choice for the temperature source is GPU temperatures. Since the GPU is typically the component that generates the most heat during demanding tasks, using GPU temperatures allows your case fans to respond directly to the heat produced by the graphics card. This method ensures that the cooling system is tailored to the GPU’s thermal needs, helping to prevent overheating and potential performance throttling.

Another option is to combine CPU and GPU temperatures to create a comprehensive temperature source for your case fans. This can be achieved using advanced custom sensors provided by fan control software like Fan Control’s “Mix” sensor. By mapping fan curves to both CPU and GPU temperatures, you can achieve a more balanced cooling solution that considers the thermal needs of both components.

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

Ultimately, the temperature source you choose for your case fans should align with your specific setup and cooling requirements. Whether you opt for GPU temperatures or a combination of CPU and GPU temperatures, selecting the right temperature source is essential for achieving efficient cooling and optimal performance.

Temperature SourceBenefits
GPU TemperaturesDirectly responds to GPU heat, prevents overheating and throttling, tailored cooling solution
Combination of CPU and GPU TemperaturesComprehensive temperature source, considers both CPU and GPU thermal needs, balanced cooling solution

Setting a GPU Fan Curve

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.

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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.

Tip: Keep in mind that higher fan speeds will result in better cooling performance but at the cost of increased noise. Finding the right balance is key to achieving optimal GPU cooling while keeping noise levels within acceptable limits.

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.

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.

Hysteresis and Its Importance

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 is an important factor in fan control as it helps achieve a more stable and efficient cooling performance.”

By experimenting with different hysteresis values, you can find the optimal setting that strikes the right balance between rapid response to temperature changes and minimizing excessive fan noise. Remember, every system is unique, so it’s crucial to monitor your temperatures closely and make adjustments accordingly to achieve the best cooling performance.

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


In conclusion, finding the best fan curve settings is essential for achieving optimal cooling performance and reducing noise levels in your system. By following the steps outlined in this guide and utilizing fan control software, you can customize your fan curves to suit your specific setup.

Experiment with temperature breakpoints and fan speeds to strike the perfect balance between thermals and noise. Remember, setting a CPU fan curve with static fan speeds and a gradual increase can help minimize unnecessary fan ramping up and down. Similarly, case fan curves with static fan speeds up to a certain temperature, followed by a gradual linear increase, allow for optimal airflow under load.

When setting a GPU fan curve, consider finding the maximum fan speed that you are comfortable with based on your noise preference. This will help maintain a balance between thermals and noise during demanding tasks. Don’t forget to adjust the hysteresis settings to achieve your desired fan behavior.

By taking these steps, you can fine-tune your fan curves and create a more efficient and quieter setup. Enjoy the benefits of improved cooling performance and a more enjoyable gaming experience with the best fan curve settings for your system.

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