Not entirely unexpected with the current power draws, but sad nonetheless. The theoretical benefits of HBM for consumer devices keep getting eroded every generation by GDDRx failing to stop in its own advancement. At equal performance per unit cost (or even slightly less once the interposer is factored in) the volume and power benefits only materialise in cost-no-object SKUs. I wonder if AMD will continue pushing it with Navi, or change back to GDDR.