How to BIOS update your RTX 30 series GPU to support Resizable BAR

Updating our Gigabyte RTX 3070 Gaming OC to support Resizable BAR

We have already tested the impact of Resizable BAR support on Radeon graphics cards, on both Intel and AMD-powered systems, and our prior articles detail how to update your motherboard’s BIOS and how to enable Resizable BAR support on them. 

The meat of this guide is how to upgrade your graphics card’s BIOS to enable Resizable BAR on your RTX 30 series graphics card. To do this, we will be using Gigabyte’s RTX 3070 Gaming OC graphics card. 

Step 1 – Prep your gaming system

Before updating your graphics card’s BIOS, you should first update your motherboard’s BIOS and enable Resizable BAR within your UEFI. Without motherboard-based Resizable BAR support, you will not be able to utilise Resizable BAR on your graphics card. 

To enable Resizable BAR on Geforce systems, you will also need to install GPU drivers that support Reliable BAR. For RTX 30 series graphics cards, Nvidia’s Geforce 465.89 WHQL drivers or newer feature support for Resizable BAR. However, it is worth remembering that newer drivers will likely support Resizable BAR across a broader selection of PC games. 

  
Finding a Resizable BAR compatible BIOS

For Gigabyte users, you will need to head over to Gigabyte’s website and find the webpage for your graphics card. You will be able to find your graphics card by searching for its name and model number. 

On your graphics card’s webpage, you should navigate to your graphics card’s support menu and then your graphics card’s downloads section. From there, you should be able to find your graphics card’s BIOS.

Please select the correct BIOS for your graphics cards and download it.  

  
Warning – Use the Correct BIOS

Some graphics cards will have multiple series’ of BIOS, with our RTX 3070 Gaming OC having three separate BIOS revisions. To find the correct BIOS for you, you will need to find out whether your RTX 3070 Gaming OC uses an F1, F10, or F20 BIOS.  

  

Which BIOS should I use? 

Using Techpowerup GPUz, a popular GPU analysis tool, you can uncover a lot of information about your graphics card. This information includes your GPU’s BIOS revision. 

By heading over to GPUz’s Advanced Menu, you can use the tool’s drop-down menu to select “Nvidia BIOS” as an option. From there, you can read which version of Gigabyte’s GPU BIOS is used on your graphics card. 

As underlined below, our RTX 3070 Gaming OC uses Gigabyte’s F1 BIOS. This means that we should download Gigabyte’s F3 BIOS update. 
  

  

Extracting Gigabyte’s BIOS Update Files

After downloading Gigabyte’s RTX 3070 Gaming OC BIOS update, you should extract Gigabyte’s Zip file and look at the folder inside. To get this BIOS update to work, we needed to extract the “x64” folder to access our GPU’s BIOS update.

From here, we can now enter Gigabyte’s x64 folder and then run the folder’s “N3070GOL.F3” file, which will start the BIOS update process. This BIOS update should take less than a minute to complete, and users should not power down their system until the update process finished. 

After updating your GPU’s BIOS, you should restart your system. 

  

Did my BIOS update correctly?

By checking your GPU’s BIOS using GPU-Z, you can see if your BIOS update installed correctly. Below, we can see that Gigabyte’s F3 BIOS was installed, which means that the BIOS update was a success. 

  

Does Resizable BAR work? 

Using GPU-Z, you can also check to see if Resizable BAR is enabled on your system. This will allow you to check if your GPU, graphics drivers and motherboard all support Resizable BAR. 

  

Within the Nvidia control panel, Geforce users can also check to see if Resizable BAR is enabled on their system.