In the 290X, the power budget allocated to Hawaii, that is, to the GPU alone, happens to be 208W, vs. about 285W for the entire card.
http://www.hardware.fr/articles/923-22/comprendre-powertune-plus-details.html
Make of that what you will.
http://www.hardware.fr/articles/923-22/comprendre-powertune-plus-details.html
Make of that what you will.