How to use 2 graphics cards at the same time

Last Updated: Feb 15, 2024 by

If you’re a gamer or a video editor, you know the importance of having a powerful graphics card. But what if you could double that power by using two graphics cards at the same time? This is possible through a process called GPU scaling, and in this article, we’ll discuss how to use multiple graphics cards simultaneously and the compatibility requirements for this setup.

What is GPU Scaling?

GPU scaling, also known as CrossFire (for AMD) or SLI (for NVIDIA), is a technology that allows you to use multiple graphics cards in tandem to improve performance. This is achieved by splitting the workload between the two cards, allowing for faster rendering and smoother gameplay. However, not all graphics cards are compatible with this technology, so it’s important to do your research before attempting to use multiple cards.

Graphics Card Compatibility

The first step in using two graphics cards at the same time is to ensure that they are compatible with each other. Both cards must be from the same manufacturer (AMD or NVIDIA) and have the same GPU model. Additionally, they must have the same amount of VRAM and be from the same series (e.g. both GTX 1080). It’s also important to note that not all games and applications support GPU scaling, so it’s best to check compatibility before attempting to use this setup.

Installing the Graphics Cards

Once you have confirmed compatibility, the next step is to physically install the graphics cards into your computer. This may require additional power cables and a compatible motherboard with enough PCIe slots. It’s important to follow the manufacturer’s instructions for installation and to properly ground yourself to avoid any damage to the cards.

Enabling GPU Scaling

After the cards are installed, you’ll need to enable GPU scaling in your computer’s settings. For AMD cards, this can be done through the Radeon Settings software, while NVIDIA users can use the NVIDIA Control Panel. Once enabled, you may need to restart your computer for the changes to take effect.

Testing and Troubleshooting

To ensure that your setup is working properly, you can run a benchmark test or play a graphics-intensive game. If everything is working correctly, you should see a significant improvement in performance. However, if you encounter any issues, such as crashes or artifacts, you may need to troubleshoot your setup. This could involve updating drivers, adjusting settings, or even replacing one of the graphics cards.


Using two graphics cards at the same time can greatly improve your computer’s performance, but it’s important to make sure that your cards are compatible and that you follow the proper installation and setup process. With the right hardware and software, you can take your gaming or video editing to the next level. Have you tried using multiple graphics cards? Let us know in the comments.

Gulrukh Ch

About the Author: Gulrukh Ch

Gulrukh Chaudhary, an accomplished digital marketer and technology writer with a passion for exploring the frontiers of innovation. Armed with a Master's degree in Information Technology, Gulrukh seamlessly blends her technical prowess with her creative flair, resulting in captivating insights into the world of emerging technologies. Discover more about her on her LinkedIn profile.