We measure system-wide power draw from the wall while running the 3DMark Time Spy stress test for 30 minutes.
Our final comparison between the two BIOS comes with a look at total system power draw. The difference here is bigger than I expected, with a 45W increase to power consumption once the BIOS is updated. That puts total system draw around the same level of the RTX 2060 Super, yet also about 50W less than Vega 56. As with other Navi-based cards, this means overall efficiency is much better than previous AMD products, yet still not quite as good as Nvidia GPUs.