Yeah.. would be nice for everyone's sake I think. It's weird that the XC3 (a 2 PCIE power connector) bios allows the card to pull more power than the actual 3 pin XOC bios.
I have the ASUS ROG Thor 1200W PSU and it has a built in wattmeter in the side, as well as having one in the wall. XC3 bios seems to allow the card to draw about 50 more watts which would make it ~500w. With that in mind I'm hoping it's just a bios fix that they need to roll out. It's weird that the first card I had that died (2014 serial) to the red light issues took the 500w bios no problem but this new one (china 2012) really doesn't seem to like to exceed 100% PT and if it does it's only for a brief second before it comes flying back to about 420w.