Make sure you people are running timespy extreme to test power draw. It is unlikely, but possible, that a your kingpin won't ever draw 520W on port royal at stock voltage (1.1 or lower), it is only a 1440p bench.
Furmark artificially annihilates memory and cache power (fbvdd and msvddd) which, if you care to destroy your sanity keeping up to date on the FTW3 XOC thread, does not seem to be tied with pci-e slot power like the core/nvvdd does. So getting higher power in Furmark isn't really practically relevant, while timespy extreme (4k dx12 gaming rasterization) is.
All these apologists always ignore the simple fact that a Asus Strix or MSI trio will EASILY coast to and cap at 520W (after flashing kpe bios) on Timespy extreme even at sub 1.1V. When shunting to remove power limits we know 3090s tend to use around 600W+ on 1.1V on TSE at ~40-50c (golden bins excluded).
As someone with a shinny new kpe that finally just arrived this morning, I'm now personally invested in finding out if we can get some confirmation that someone has a kingpin that won't hit 520W on the 520W bios in Timespy Extreme, because it absolutely should. Otherwise it is staying in the box for a free return.