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NVIDIA’s Resizable BAR will require new BIOS updates for both GPUs and motherboards

NVIDIA has announced that its latest graphics cards will be able to support Resizable BAR in late February. However, there is a catch here. This feature will only be available on the RTX 30 series GPUs. In other words, those that have purchased the expensive RTX 20 series GPUs will not have access to it.

As NVIDIA noted:

“New GeForce RTX graphics cards starting with the GeForce RTX 3060 will have support for Resizable BAR. NVIDIA and our GPU partners are also readying VBIOS updates for existing GeForce RTX 30 Series graphics cards starting in March.”

What’s also important to note is that, alongside a new driver, Resizable BAR will also require new BIOS updates for GPUs and motherboards. As such, if your motherboard manufacturer does not release a new BIOS with support for it, you won’t be able to use it, even if you own an NVIDIA RTX 30 series GPU.

NVIDIA claimed that it has been working closely with Intel, AMD and major motherboard manufacturers, including ASUS, ASRock, EVGA, GIGABYTE, and MSI, to bring Resizable BAR support to a wide range of motherboards. Still, we are not certain yet which motherboards will support it.

Resizable BAR is a new tech via which assets can be requested as-needed and accessed. As such, the CPU will efficiently access the entire frame buffer. Moreover, transfers can occur concurrently, rather than queuing, whenever there are multiple requests.

AMD has already showcased this tech in action, showing an 8-15% performance boost in some games. This is free performance boost, without any image degradation/loss.

NVIDIA’s Game Ready Driver with Resizable BAR support will be out in late February.

24 thoughts on “NVIDIA’s Resizable BAR will require new BIOS updates for both GPUs and motherboards”

  1. NVIDIA claimed that it has been working closely with AMD to bring Resizable BAR support to a wide range of motherboards.

        1. Why? Beta hardware, expensive, barely any improvement over the previous generation, RT performance that is already basically useless on everything short of a 2080, and the 3000 series destroyed them in every way for half the price. It was a bad, bad gen.

          1. what you say applies to every gen. And RT performance on 20 series is far from useless – have you even seen AMD RX 6800 RT performance? Or looked at console performance on RT?

      1. I own a 2060 (non super!) and I’m happy as f*uck with it. It runs everything on high+ on my 1920 x 1200 display. I guess your friends are whiny little f*cks who want latest tech every 6 months like the fluoride stare NPC zombies they are

        1. I literally had to star refusing to repair XP computers at one point. Many many years after the version was dropped for all support. Now I refuse anything older than Windows 8. I won’t touch a 7 machine unless I’m also upgrading it to 10.

  2. Im on a z390 platform im probably gonna be left out…but its not like im planning on getting a new nvidia gpu with the current prices of the market

  3. Theoretically, as well as technically speaking, SAM or resizable BAR should also work in Windows 7 OS environment, if MS brings support for this OS.

    This is because, Microsoft basically added support for this feature with Windows 10 when it introduced the Windows Display Driver Model 2.0, but evidently, no GPU vendor supported it until now.

    Most importantly, Resizable BAR capability ( PCIe specification-name for SAM) was initially baked into the PCIe 2.0 standard in 2008, as far as I can recall, before being modified in revisions to PCIe 3.0 in 2016.

    Also, let’s not forget PCIe is backwards compatible as well. So YES, the feature can be enabled on Windows 7 OS as well, albeit even if marginally, or via Emulation as well, but MS isn’t providing any further official support for this OS. So I don’t expect this to happen anytime soon.

    They want the Majority user base to shift to Windows 10 OS ecosystem.

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