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One physical GPU split into virtual functions handed to separate Windows desktops

Licence-Free Windows VDI on Proxmox with an Intel Arc Pro B50 β€” and the Firmware Limit That Stopped It

Intel’s Arc Pro cards do SR-IOV natively, with no vGPU licence to buy β€” which makes a licence-free Windows VDI on Proxmox genuinely possible. The whole build on a B50, the Windows-first bootstrap problem, why the firmware caps it at two virtual functions, and how many each card in the B-series gives you.

7th August 2026 Β· 16 min Β· 3385 words Β· Damien Dye
A small aperture sliding over a large framebuffer, beside the whole framebuffer mapped at once

PCIe Resizable BAR and Modern GPUs β€” Intel Arc, NVIDIA and AMD

Resizable BAR lets the CPU map a GPU’s whole framebuffer instead of peering at it through a 256MB window. Intel calls it required for Arc, NVIDIA enables it per game, AMD sells it as Smart Access Memory β€” and for AI work it changes the transfer, not the maths.

7th August 2026 Β· 11 min Β· 2296 words Β· Damien Dye