After some youtube/google, i read that corsair psu is made by seasonic? Is it?
Some of their PSUs are made by Seasonic, others by CWT.
As for the 6-pin, do you mean where it plugs in? It goes into the graphics card itself. If the graphics card has 6-pin (or 8-pin) connector sockets, you need to plug in their corresponding power connectors.
Make sure you don't try to plug a 6+2 pin PCIe connector into the motherboard, or an 8-pin (EPS) CPU connector into the graphics card. They're keyed differently so they won't fit where they don't belong.