Third display don't work via active (HDMI,DVI,VGA to DP) adapter on Windows 7 x64, but on Linux it's work great (with opensource drivers) even without any active adapter directly (HDMI DVI-D VGA through simple VGAtoDVI-I adapter). ASUS HD 7850.
Whats the problem? "Especially" drivers for Windows users?
And why you are writing like that "it needs active adapter etc" but it don't on Linux at all??
