Yep, it might be any kind of mistakes on third party bioses.
As for test, the consumption is defenitely rising. In kombustor it's around 600 Wtts. Whcich means for me to switch it off immediately )))
In Metro or other tests no power limits occur, it's some increse in consumption, but it is hard to compare. As I remember (I sold me first FTW3), running this bios shows less consumption, but with possibility to overclock it more. Metro can work at almost 2200 with high voltage, which is good but hot even under watercooling.
Now I'm using stock bios, but WC on the card decreases consumption very well due to less leakage currents. So I can get more even on stock.
It looks like this now, I mean WC system: