By now you may have heard that there is the potential for the Radeon RX 480 to draw more power from the PCI-E bus than it’s rated to provide. In rare situations, this could potentially cause problems for the system. AMD/RTG is preparing to release a Windows driver fix while I checked in with AMD about addressing this situation under Linux…

Source: Phoronix – AMD’s Linux Driver Will Likely See A Power Change For The Radeon RX 480 Too