That's funny, I won't be surprised if that's true. AMD certainly was in a rush to get this card out to compete. Most of these cards are basically still reference boards with reference coolers. I'm thinking the extra R600 you save by going powercolor instead of sapphire is a nice score!
My (OC) motherboard supports 300W draw from pci-e. I could rack 3 of these cards without having to think about the few extra watts being drawn from the bus. I'm waiting to sell my old R9 280X before I plan to upgrade, so for now I'm watching reddit with my popcorn next to me! Perhaps I can wait till the end of the year for Vega chips, although with regards to AMD enthusiast grade single GPU cards, I keep on getting more and more disappointed with each release.