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What is Undervolting CPU?

By: Henz Llarves | Date Posted: January 24, 2023

What is Undervolting CPU?

If you’re a PC gamer, you’ve probably heard of an undervolting CPU. But what is it, exactly? Undervolting the CPU is a technique that can be used to reduce the power consumption of your processor. It does this by reducing the amount of voltage that’s sent to the CPU. This can result in reduced heat generation and lower electricity bills.

Undervolting Vs Overclocking

Undervolting a CPU

Overclocking and undervolting are two popular methods for improving the performance of your computer. Both methods involve making changes to your computer’s hardware or software in order to increase its speed. However, there are some key differences between the two. Overclocking generally refers to making changes that will cause your computer to run faster than its standard speed. This can be done by increasing the clock speed of your processor or by adding more memory to your system. On the other hand, undervolting involves making changes that will reduce the amount of power your computer uses. This can be accomplished by reducing the voltage of your processor or by lowering the power consumption of your graphics card. Each method has its own advantages and disadvantages, so it’s important to choose the one that’s right for you.

Benefits of Undervolting the CPU (Processor)

Benefits of undervolting

Undervolting CPU can offer some significant benefits, including:

Reduced Heat Generation

One of the benefits of undervolting the CPU is reduced heat generation. By reducing the voltage supplied to the CPU, less heat is produced. This can be a major advantage in laptops and other devices where space is limited and cooling systems are not as effective.

Increased Battery Life

The majority of people use their laptops for tasks that don’t require much processing power, such as browsing the web, checking email, or watching videos. As a result, most users could get by with a significantly lower voltage than what is typically used. Undervolting the CPU can lead to a number of benefits, chief among them being increased battery life. By reducing the amount of power required to run the processor, there is less strain on the battery, leading to increased performance.

Lower Electricity Bills

Any computer user knows that CPUs use a lot of power. In fact, they are one of the biggest power consumers in a PC. This is why undervolting the CPU can lead to lower electricity bills. Undervolting means reducing the amount of voltage that the CPU uses. This leads to lower power consumption and, as a result, lower electricity bills. While it may seem like a small change, undervolting can lead to significant savings over time.

Reduce Noise

Computers today are an integral part of most people’s lives. They are used for work, school, and entertainment. However, one of the downsides of these devices is the amount of noise they generate. Fans spin at high speeds to keep components cool, and hard drives make a clicking sound when they’re accessed. This can be extremely annoying, especially if you’re trying to concentrate. One way to reduce the noise generated by your computer is to undervolt the CPU. This involves lowering the voltage that’s supplied to the processor, which in turn reduces its power consumption and heat output. As a result, the fan doesn’t have to spin as fast, and the overall noise level is reduced. If you’re looking for a way to make your computer quieter, undervolting the CPU is a great option.

Prevent Thermal Throttling

As any PC gamer knows, thermal throttling is a big issue. When your CPU gets too hot, it starts to slow down in order to prevent damage. This can be a major pain, especially if you’re in the middle of a heated game or battle. One way to combat thermal throttling is to undervolt your CPU. This means reducing the amount of power that your CPU uses, which in turn reduces the amount of heat it produces. While it may sound like a complicated process, it’s actually quite simple and can be done with just a few clicks. Best of all, undervolting your CPU can help maintain your gaming performance by preventing thermal throttling from occurring.

Maintain Optimum Performance

One of the benefits of undervolting the CPU is that it helps maintain optimum performance. When a CPU is overclocked, it runs at a higher voltage than what is considered safe for the chip. This can lead to unstable performance and eventually damage the CPU. However, by undervolting the CPU, you can prevent it from overclocking and running at an unstable voltage. As a result, your CPU will be able to run at its optimum performance for a longer period of time. In addition, as I mentioned above, undervolting can also help reduce power consumption and heat generation, which results in better stability and efficiency of your CPU.

Disadvantages of Undervolting the CPU

The risk of undervolting the CPU

May Not Be Worth It for Some CPUs

While undervolting your CPU can certainly save you some money on your energy bill, it may not be worth it for everyone. For starters, not all CPUs are compatible with undervolting. In addition, the amount of money you’ll save will vary depending on how much you use your computer and what kind of tasks you use it for. And finally, undervolting your CPU can potentially shorten its lifespan if done incorrectly. So, if you’re thinking about undervolting your CPU, it’s important to do your research and weigh the pros and cons before making a decision.

Can Lead to Decreased Performance

One of the potential disadvantages of undervolting your CPU is that it may lead to decreased performance. While undervolting can help to reduce heat and improve efficiency, it can also result in a lower clock speed and reduced processing power. In some cases, this may be negligible, but in others, it may lead to a noticeable drop in performance. Therefore, if you are planning to undervolt your CPU, it is important to weigh the potential risks and benefits beforehand. Otherwise, you may find yourself disappointed with the results.

Can Cause Instability in your System

One of the disadvantages of undervolting your CPU is that it can cause instability in your system. When you reduce the voltage, you are also reducing the amount of power that is available to the CPU. This can lead to the CPU not being able to function properly, which can cause it to become unstable. In some cases, this can even lead to the system crashing. If you are going to undervolt your CPU, you should have a certain knowledge of computers and be comfortable troubleshooting any problems that may arise. It is important that you do it carefully and slowly so that you don’t accidentally cause any damage to your system.

Void the Warranty

When you undervolt your CPU, you are essentially voiding the warranty. This is because the process of undervolting involves altering the voltages of the CPU, and this will definitely void the warranty that came with your purchase. In essence, you are risking your CPU by undervolting it, and if anything goes wrong, you will not be able to claim a warranty. While some people are okay with this, others are not so comfortable with taking this risk.

How to Undervolt the CPU?

There are a few different ways to undervolt a CPU. The most common method is to use the BIOS settings. In the BIOS menu, look for the “CPU Voltage” setting and reduce it by a small amount. Once you’ve saved your changes and rebooted your computer, you can begin stress-testing your CPU to see how well it performs. If you’re not comfortable making changes to your BIOS, there are also a number of software utilities (e.g., ThrottleStop) that can help you undervolt your CPU.

When Should I Undervolt my CPU?

There is no one-size-fits-all answer to this question, as the decision of whether or not to undervolt your CPU depends on a variety of factors. However, if you are looking for ways to reduce power consumption and heat generation, undervolting your CPU is a good option. If you are unsure about whether or not undervolting is right for you, do some research and see what others have had success with. There are many online resources that can help guide you through the process. It is also important to remember that undervolting should only be done by those who are comfortable with computers and are familiar with the risks involved.


I’ve discussed everything you need to know about undervolting your CPU. I’ve talked about the pros and cons, as well as how you can do it and when it’s appropriate. So, what do you think? Is undervolting right for you? Only you can make that decision. But if you’re curious and want to give it a try, I encourage you to do some research and experiment with different methods and settings to find what works best for you.

Henz Llarves

Henz Llarves

I'm Henz Llarves and I'm passionate about writing and gaming. I've been building gaming PCs for a long time, and I've been writing about them as well.

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