background regions with Real-ESRGAN with AMD

[Ohrwerk]

I don't have an NVIDIA GPU and so I can't use the --bg_upsampler function. However, the results of the faces are very impressive.
Is it possible to use the Vulcan version of Real-ESRGAN with --bg_upsampler and if so, could someone help me with that since I'm not very familiar with these Python "things".
Also I wanted to ask what specifications a NVIDIA GPU has to have, the prices are not very good and so I wonder if a NVIDIA Quadro is also sufficient and how much RAM it needs then (512MB/1GB/2GB). For home use, it also does not depend on speed, if you want to improve an old photo. You can also wait a while, floppy disks don't readed themselves within seconds... long time ago...
Thank you