as you can see in these 4 images, the 6 pin is non-compliant due to the way the pcb is designed. usually there are 2 grounds + 1 ground that is not connected to the other two. this is to check whether the 6 pin is hooked up to the card. however for the rx 480, all three grounds are connected to another another, and as you can see, one poster says that it'll require a new pcb.
now in image 2, basically the pcie express and the 6 pin also power the vcore, and also the person goes on to state that the pcie also powers the vram. and to confirm that in image three, he says to check out actually hardcore on twitch as his source to confirm the problem. and from what he can tell, amd also did not bridge the pcie power and the 6 pin power.
lastly, in image 4, 3 vrms - powered by the 6 pin - 3 vrms powered by the pcie express.
now, there is a fix to the whole thing, besides the amd driver update next week.
so take a look at image 5.
note the red text.
lastly, image 6, the fix to this
the solution to fix the whole problem, is you solder the pins on the left, to bridge the pcie express 12v rail, and the 6 pin rail. then, you desolder the pcie power rails to the vrms. and he says, by doing that, the pcie express should stay below 60 watts at average. and he does warn at the end, that if you don't know what you're doing, don't try it. but anyways, i thought i'd share some cool information in my first post from the people in the amd discord, hope you enjoy.