Also remember, Nvidia prohibited to virtualize their hardware for all gaming cards (only professional lines allowed), even pushed virtual machines vendors to ex

Also remember, Nvidia prohibited to virtualize their hardware for all gaming cards (only professional lines allowed), even pushed virtual machines vendors to extract support of Nvidia gaming cards (for example, Xen have official statement on this). But AMD and Intel does not follow Nvidia in this controversy, and all their officially supported cards could work under virtual environment. This is not unbreakable issue, for example could use old drivers or from independent open source, but in some cases this could be very annoying.