Sounds like a sweet deal so far, though you will need to meet some hardware requirements.

Does it actually work, though?

When I first tested Resizable BAR on an RTX 3070, it didnt really do much of anything.

A stylised Nvidia graphic showing how Resizable BAR helps GPUs draw more from their available memory.

Still, could several years of maturation, newer benchmark games, and a higher-techRTX 4060produce more tangible results?

Or, at least, it is if youre using an Nvidia or AMD graphics card.

If youve gone third-party-candidate and picked up an Intel Arc GPU, its a rather different story.

An Nvidia GeForce RTX 3090 Founders Edition, installed in a PC.

Heres the before-and-after with Intels latestArc B580:

Indeed.

But then, its still evidently not so great at doing that on Nvidia cards either.

So long as were tenuously stretching for positives, its also true that Resizable BAR wonthurtperformance on modern hardware.

A bar graph showing how enabling and disabling Resizable BAR affects gaming performance on the RTX 4060 GPU.

How do I turn Resizable BAR on and off?

you could check whether Resizable BAR is active through the Nvidia Control Panel.

Click “System Information” in the bottom-left corner and you should find it listed among your GPU details.

A bar graph showing how enabling and disabling Resizable BAR affects gaming performance on the Intel Arc B580 GPU.

Likewise, Intel Arc owners can check that its enabled correctly via the Intel Graphics Software app.

The The Intel Arc B580 Limited Edition graphics card on a table.

A screenshot of Asus’s UEFI BIOS, showing how to quickly enable Resizable BAR.

A screenshot of Asus’s UEFI BIOS, showing how to enable Resizable BAR support.

A screenshot of Nvidia Control Panel. Resizable BAR is highlighted, showing that it’s enabled.