In the unboxing video the guy said not to use the power adapters.... I think in this case he may be wrong....
Look at them closely, they are 2 x 6 pin ==> 1 x 8 pin adapters.... not molex.
I think that would actually be better than just 2 x 8 pin, since you can add more rails to the card on big multi rail psu's...
Card is a sexy bitch though...