I honestly havent followed the Vega announcements that much; waiting for the proper reviews once it is released. But from what you are saying, I should conclude that AMD is sticking to their legacy of producing very hot GPUs? Quite sad really... Let us hope we are all wrong. =)
Just read up on the FF edition, and the heat issues there. When you use that information and correlate this to the Vega 64/56 there Board TDP, its clear to me that they have a power issue ( again ).
Its the same reason why i sold my AMD 290x and switched to a Nvidia 970. While i took a loss in performance, the amount of pure quiet bliss was well worth it. After reason up about the FF, i already figured that AMD had issues again and simply ordered myself a 1070 for my SFF build.
Not saying its a bad GPU but they are just catching up on Nvidia, even with a increased power usage. People expected to see a Intel / Ryzen style with Vega but they forgot that Intel has been more or less sitting on there behinds the last few years. This made the Ryzen much more impressive. Nvidia has not been sitting on there behinds ( beyond also increasing the prices *grumble* because of lack strong competition ).
AMD frankly made a big mistake buying up ATI in the past. The have been constantly pushing there GPU development too much with pure raw power / wattage to fight Nvidia. Especially the last few years. And now that Vega comes out, in a few months we are looking at Nvidia there 1060/1070/1080 refresh lineup... Mja ... that is going to be much harder fight for AMD i fear, then on the CPU side with Intel ( who shot themselves in the foot with x299 ).
