"With Tom's Hardware reporting that the RX 480 draws (substantailly) more than the 75W allowed from the motherboard (for example, the PCI Express high-power card spec allows a mazimum of 66W to be drawn from the 12V pins of the PCI Express slot, and the RX 480 averages79W from the 12V lines alone) AMD seems to be violating the PCI Express(R) spec.
According to the licensing contract for the spec, if they do not fix this within 3 months, AMD will NOT be able to call the card a PCI Express card. If they do, they face not only litigation, but if my understanding is correct an action before the U.S. International Trade Commission (ITC) to ban the importation of the card as counterfeit goods. You might think the PCI-SIG will give AMD a pass, but if they do, they risk loosing the trademark entirely. An unforced trademark gets invalidated. The SIG won't let that happen.
So what does this mean to the consumer? I think there are two possibilities, if we assume AMD will not choose to remove the PCI Express logos from these cards: Either they will alter the boards to have an 8-pin socket and to more power from there, or they will neuter the card to ensure it doesn't draw more power than the PCI Express specification allows. I don't see any other options.
Disclaimer: I am an attorney, but I practice patent law, not trademark law. This post does not constitute legal advice and does not create an attorney-client relationship".
It could damage low end motherboards, and since this will go in many oem systems, it could become a problem