> that is nice for you, but who else have such a setup? you think it is common?
Pretty much all AMD and Nvidia GPUs for the last 2-3 years support 10 bits per component. (AMD FireGL workstation cards started supporting it in 2008, and Nvidia Quadro workstation cards in 2009; it's a bit more recent than that in consumer parts). Monitors are more problematic, but 4K TV has been standardized on wide-gamut and HDR so I expect 4K computer monitors to follow suit.