How do you underclock a processor?

2 Use a software utility

The second step to underclock a processor is to use a software utility that allows you to adjust the CPU frequency and voltage from within the operating system. There are several software utilities available for different platforms and processors, such as Intel XTU, AMD Ryzen Master, or ThrottleStop. You can download these utilities from the official websites of the processor manufacturers or from reputable sources. Once you install and run the utility, you can use the sliders or buttons to lower the CPU frequency and voltage by small increments, and apply the changes. You can also use the utility to monitor the CPU temperature, power consumption, and performance.

3 Test the stability and performance

The third step to underclock a processor is to test the stability and performance of your system after applying the changes. You can use various tools and methods to test the stability and performance, such as stress tests, benchmarks, or real-world applications. Stress tests are programs that put a high load on the CPU and other components, such as Prime95, AIDA64, or Cinebench. Benchmarks are programs that measure the speed and efficiency of the CPU and other components, such as CPU-Z, Geekbench, or PassMark. Real-world applications are programs that you use regularly or occasionally, such as web browsers, video editors, or games. You can run these tools and methods for a few hours or days, and check for any errors, crashes, or slowdowns. If you encounter any problems, you may need to increase the CPU frequency or voltage slightly, or revert to the original settings.

4 Adjust the cooling system

The fourth step to underclock a processor is to adjust the cooling system of your computer, which consists of fans, heatsinks, or liquid coolers that dissipate the heat generated by the CPU and other components. Underclocking a processor reduces the heat output, which means that you may not need as much cooling as before. You can use the BIOS settings or software utilities to lower the fan speed or disable some fans, which can reduce the noise level and power consumption of your system. However, you should not compromise the cooling system too much, as it may affect the stability and longevity of your processor and other components. You should always monitor the CPU temperature and keep it within a safe range, usually below 80 degrees Celsius.

5 Consider the trade-offs

The fifth step to underclock a processor is to consider the trade-offs between the benefits and drawbacks of underclocking. Underclocking a processor can save you some energy, lower your electricity bill, reduce the noise level, extend the lifespan of your processor and other components, or help you troubleshoot stability issues. However, underclocking a processor also lowers its performance, which may affect some applications or games that require high CPU speed. You may also lose some features or functions of your processor, such as turbo boost or hyper-threading, that depend on the CPU frequency and voltage. You should weigh the pros and cons of underclocking, and decide whether it is worth it for your needs and preferences.

6 Experiment and optimize

The sixth and final step to underclock a processor is to experiment and optimize your settings, until you find the optimal balance between performance and efficiency. There is no universal formula for underclocking a processor, as different processors and systems have different characteristics and behaviors. You may need to try different combinations of CPU frequency and voltage, and test them with different tools and methods. You may also need to adjust other settings, such as memory speed, graphics card settings, or power plan, to optimize your system. You should always backup your data and settings, and be prepared to restore them if something goes wrong. Underclocking a processor can be a rewarding and fun experience, if you do it carefully and wisely.