NVIDIA has announced that Resizable BAR support is now available for GeForce RTX 3060 graphics cards and GeForce RTX 30 Series laptops. Green team confirmed the news in an article posted on the official GeForce blog this morning, which also included details as to when the performance-boosting feature would be activated for the rest of the Ampere lineup. Users who wish to take advantage of Resizable BAR will initially require an AMD Ryzen 5000 Series (Zen 3) or Intel 10th/11th Gen processor, as well as the proper SBIOS/VBIOS and Game Ready Driver updates.
“Resizable BAR is an optional PCI Express interface technology,” NVIDIA explained. “As you move through a world in a game, GPU memory (VRAM) constantly transfers textures, shaders and geometry via many small CPU to GPU transfers.”
“For desktops, you will need a compatible CPU, compatible motherboard, motherboard SBIOS update, GPU VBIOS update (the GeForce RTX 3060 already ships with the necessary BIOS) and new GeForce Game Ready driver to enable Resizable BAR.”
NVIDIA promised that VBIOS updates for enabling Resizable BAR on Founders Edition GeForce RTX 30 Series GPUs will be released in late March. The company has also published a list of GeForce RTX 30 Series Resizable BAR supported games, which includes notable hits such as Assassin’s Creed Valhalla and Red Dead Redemption 2.
“[…] the performance benefits of Resizable BAR can vary substantially from game to game,” NVIDIA noted. “In our testing, we’ve found some titles benefit from a few percent, up to 10 percent. However, there are also titles that see a decrease in performance, so NVIDIA will be pre-testing titles and using game profiles to enable Resizable BAR only in games where it has a positive performance impact.”