Single monitor idle power consumption has been greatly improved over previous Vega cards. With only 8 watts in idle, it's now right where it should be.
Unfortunately, multi-monitor power consumption is still bad, nearly three times that of competing NVIDIA cards.
Media playback power draw is good—lower than on any other AMD card and better than NVIDIA's RTX lineup.
Gaming power draw has been improved a lot. In absolute numbers, it's roughly similar to the Radeon Vega 56, yet the RX 5700 XT delivers over 30% more performance with that power budget. It's still not as efficient as cards from NVIDIA, but the difference has shrunk considerably.
Furmark maximum power is slightly lower than the highest gaming power draw we've seen (223 W vs. 227 W), which suggests that the card is limited by the power-capping mechanism, probably to ensure optimum efficiency—something NVIDIA has introduced with Turing, too.