All NVIDIA RTX 30 series desktop GPUs now have resizable BAR support

NVIDIA GeForce RTX 3080
NVIDIA GeForce RTX 3080 (Image credit: Harish Jonnalagadda / Windows Central)

What you need to know

  • NVIDIA released a new GeForce Game Ready driver update today.
  • The driver update brings resizable BAR support to all RTX 30 series desktop GPUs.
  • Resizable BAR can boost hardware performance in supported games.

NVIDIA released its GeForce Game Ready 465.89 WHQL driver (opens in new tab) today. It features multiple gaming-friendly feature updates including NVIDIA Reflex support for Rainbow Six Siege to help combat in-game latency as well as NVIDIA GPU optimization tweaks for the upcoming Square Enix title Outriders. Arguably the most noteworthy inclusion of the 465.89 driver update is its resizable BAR support for all NVIDIA RTX 30 series desktop GPUs, otherwise known as some of the best graphics card options available.

What resizable Base Address Register (BAR) does is allow CPUs and GPUs to more efficiently transfer game assets. It does this by removing the 256MB data transfer cap, enabling a CPU to take advantage of all of a GPU's VRAM simultaneously rather than just bite-size chunks of it. This can result in boosted hardware performance during gameplay.

According to NVIDIA (opens in new tab), these performance boosts can be as large as 12 percent in supported games. NVIDIA clarifies that resizable BAR support requires more than just an RTX 30 series GPU, such as an NVIDIA GeForce RTX 3060. You'll need a compatible CPU and motherboard as well, which NVIDIA lists in detail on its website.

Geforce RTX 3080 Resizable Bar Performance Improvements

Source: NVIDIA (Image credit: Source: NVIDIA)

At the moment, NVIDIA hasn't commented on whether full or partial resizable BAR support will come to RTX 20 series GPUs.

Robert Carnevale is the News Editor for Windows Central. He's a big fan of Kinect (it lives on in his heart), Sonic the Hedgehog, and the legendary intersection of those two titans, Sonic Free Riders. He is the author of Cold War 2395. Have a useful tip? Send it to robert.carnevale@futurenet.com.