IgorsLAB published Is a 500 W PSU really enough? An AMD Radeon RX 6800 and a NVIDIA GeForce RTX 3070 against a be quit! Pure Power 11 500 W A quote from the article:

Youve seen a lot of things, even on YouTube. For example, a 500 watt power supply miraculously survives even a GeForce RTX 3080, while exactly this card even forced a 1300 watt Platinum behemoth to give up in the lab before the Ampere launch.

  Is a 500 W PSU really enough? An AMD Radeon RX 6800 and a NVIDIA GeForce RTX 3070 against a be quit! Pure Power 11 500 W