[simcop2387]

> The two parent posters are probably talking about PCI passthrough, in which case it does not really matter.

Not quite, Nvidia actually forbids the use of their consumer level cards being used this way and actively tries to deter it by detecting the use of a hypervisor in the drivers and refusing to initialize the card. There are ways to either work around or defeat this detection, either by using patched drivers that remove the check or by. Having the virtual machine hide it's presence from the guest system which can have a performance impact. AMD does not try to prevent such uses of their consumer level cards and are more likely to work out of the box.