Is it in GPU RAM of another GPU in your system, with pixel data being DMA'ed over the PCIE bus? Does that mean my screen goes blank if I ever get contention on the bus?
Could I put loads of these cards into a machine and run 20 independent displays, all with one GPU?
Loopback cables are a bit clunky, but it does mean there's no pressure on the PCI-E bus from moving the pixels from the GPU to the USB4 card.
Apple kinda has this in their M1/M2 SoC's where the GPU is entirely separate from the stream-data-from-ram-to-the-display logic.
And put displays onto hubs and cable extenders.
Basically the CD-ROM analog audio cable all over again.
so you need to have video signal and power on one usb-c output.
The monitor has a framebuffer of it's own.
Otherwise how could it display the OSD (On Screen Display)?