Re: GPU Passthrough on FreeBSD 14.3 (AMD Radeon RX 6900 XT and Windows 10 Pro)

On Tue, 2025-09-16 at 20:29 +0000, Jonathan Vasquez wrote:
> I'm not familiar with Resize BAR, but my BIOS mentioned that it's to allow you
> "take full advantage of the GPUs memory", I'm guessing that there may be a
> significant performance drop due to this being disabled, but the performance
> is already pretty good.

Hi Jonathan,

It highly depends on your workload. As you can see in your pciconf output, the
GPU memory is smaller without Resizable BAR support. So, on memory bound
workloads you may see a difference. Compute bound workloads shouldn't expect a
performance drop.


-- 
Kind regards,
Corvin