r9 280x run on single 12v rail w/6+8 pin connector

Guigue

Reputable
Jun 3, 2015
24
0
4,520
Hey everyone, throwing together my new parts I have purchased, and I noticed that my EVGA 850W gold rated PSU came with a 12v rail that has a 6+2 pin with an additional 6pin leading off of it, so my question is can I plug the 6+2 and the 6pin from the same 12v rail into my R9 280x and still provide sufficient power to power and OC the card?

the whole of my build includes:
EVGA 850w Gold rated Modular PSU
R9 280x (x2)
MSI Gaming 5
I7-4790k
Cooler Master Nepton 280L

very similar to this image http://images10.newegg.com/NeweggImage/ProductImageCompressAll300/12-198-018-05.jpg
minus the big white thing, and the part leading off is only a 6 pin not a 6+2