Resizable Bar Support for 30 Series Graphics cards boots performance by up to 20%.

The Living Tribunal

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Sep 14, 2013
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So far for select games....more will be added in the future:
Caveat: you need 30 series Nvidia cards at the moment and the right MB Bios, VBIOS, and to have it ReBar Support enabled in your Bios:

Nvidia just released a new Game Ready Driver, version 465.89, earlier this morning. This driver update comes with several new features, plus an assortment of bug fixes and more game support.


The highlight of the new driver is the addition of Resizable BAR support on all desktop RTX 30 series products. Before, this technology was limited to just the RTX 3060 12GB, but now it has filtered down to all Ampere products. (Fingers crossed that it will also land on RTX 20 series products in the future, but that might be hoping for too much.)

Resizable BAR is a feature built into the PCIe protocol that allows the CPU to access all of a discrete GPU's frame buffer or VRAM, whereas before CPUs were limited to accessing small chunks (256MB) of VRAM at a time. This optimization can improve frame rates in some games by up to 10%, but currently game support is limited as the tech has only recently been adobted by Nvidia, AMD, and Intel.

Another feature added to this driver is 'Windows Virtual Machine Beta' support on all
of Nvidia's currently supported GPUs. Simply put, this feature allows your physical Nvidia GPU to interface directly with a virtual machine as if the card was directly connected to the VM. This will allow for full GPU acceleration in a VM environment, allowing you to do things like run older video games in say a Windows 7 virtual machine, if the game can't run on a native Windows 10 device.

Linky...

I've already downloaded it and am seeing performance uplifts....

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EDIT: Apparently it might work for 20 Series too....
 
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I hope they get it to work on the 20 series. Don't mind extra performance. Especially, when I can't get a 3080 because it's always out of stock and I am not going to pay $1,500+ to scalpers to get one.