It seems likely that Vega will be AMD's Pro/Instinct architecture moving forward, and Arcturus will be the update for that. RDNA will be used in the gaming space.
https://www.tomshardware.com/news/amd-arcturus-vega-gpu-support,39935.html
Also, the Radeon VII is actually vastly more efficient than the review numbers lead on with only a modicum of tweaking. My Radeon VII was set to 1120 mv for the boost clock of 1.8 GHz. I can actually push in up to 2.05 GHz without altering the voltage at all, which means those voltages were set really aggressively.
I can actually drop mine to 1000 mv and retain the 1800 Mhz stock clock. At that voltage, I am pulling about 240 Watts. The stock voltages really aren't well optimized, probably due to the fact that AMD slapped it together as a gaming card in hurry and shipped it out the door.
