How to Undervolt GPU

How to Undervolt GPU

GPUs are an important part of a computer and over time they have become more and more powerful. With this power, however, comes a higher demand for electricity. This can lead to high electricity bills and a need for more powerful hardware to keep up with the demand. One way to combat this is to undervolt your GPU. Undervolting will give your GPU more power and this can ultimately lead to higher performance. This tutorial is for NVIDIA cards only, but AMD users will be able to follow along.

What is undervolting?

Undervolting is a method of decreasing the voltage supplied to an electronic component. This can be done in order to decrease power consumption, heat generation, or both. Decreasing the voltage also decreases the amount of stress on the component, which may increase its lifespan. In this article, we will discuss how to undervolt a GPU.

Why undervolt my GPU?

There are many reasons to undervolt your GPU. If you have a high-end GPU, you might want to decrease power consumption because it can be an expensive cost to run.

How to undervolt a GPU?

There are many ways to undervolt a GPU. One of the easiest ways is by setting the voltage manually in AMD’s Catalyst Control Center. This method can be done even if you don’t have an AMD card, but it is more difficult.

Step 1: Go to the “AMD Accelerated Parallel Processing” section of Catalyst Control Center.

Step 2: You will see a menu:

Step 3: Go to the “Power and Performance” tab, then click on the “Manage GPU Power” button.

Step 4: You will see a menu :

Step 5: You will see the GPU voltage in the right table. Click on “Add” and then enter the number you want to set the voltage to in the box.

Step 6: Click “Add” again, enter the voltage you want to set and then click “Set”.

Step 7: Now you can go back to the top menu and see that the new voltage has been applied.

How to undervolt your GPU in Linux

Step 1: Make sure you have installed the proprietary drivers for your card. If you’re using a non-Kaveri/Fury GPU, this process will be slightly different and not covered here.

Step 2: You can set the core voltage by setting the max_cpus parameter in a xorg.conf file to 1 (assuming you’re using an AMD card, and that your kernel supports undervolting).

Step 3: Now you can set the voltage on a per-card basis by editing your xorg.conf file and using the “powerXpress” option, setting it to something lower than what you normally use.

Step 4: You can also set the voltage on a per-card basis by editing your xorg.conf file and setting “PowerMizer Mode” to “performance” or “user”. This will allow you to manually adjust the voltage in real time.

How to check if undervolting is working.

Ans, check the GPU temperature. If it is higher than 75 ˚C, undervoltting has failed.

First you need to download a program called “GPU-Z”.

Click on “Add” and add it to the applications list.

Then you need to run the following command in a terminal:

GPU-Z should open and display your GPU information. If everything is OK, there should be no lines under the “Temp” column.


In conclusion, undervolting is worth it if you want to increase the life span of your graphics card but at the same time achieve a high clock speed. It is not recommended for daily use due to the higher temperatures and power consumption.

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