Video Editing from KVM Guest?

Oh I hadn’t thought of that! So keep the PCIe 3.0 card in the x16 slot and get a PCIe 4.0 card to maximize the bandwidth of the 2nd (x4) slot? Just want to verify I understand your strategy here…

Yup, so your PCI-E x4 will be PCI-E 4.0 which is equivalent to PCI-E 3.0 x8.

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Only server graphics cards have the necessary capabilities to split their hardware across multiple users [read: operating systems].

Quakes in his boots when thinking of VirGL

Correct. Modern macOS does not support NVIDIA GPUs.

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