Do I need the Power cords that came with my gpu?

UnderSkys

Honorable
Dec 31, 2012
8
0
10,510
I have looked around and can't find any answer

I have bought a new video card and it came with a 8 pin connector which comes out to 2 separate 6 pin connectors. Do I need to use this or can I plug it in right from my psu?