I got a 770 and it needs an 8 pin and a 6 pin. It came with a 6 pin to 8 pin adapter, 2 6 pins for the 8 pin, and a molex to 6 pin 2 molex for a 6 pin. I have 2 molexes but they split off from fans. Should I use these for the 6 pin connector? I have 2 6+2 PCI-E cords I used to use for an AMD card, (8+6) and I want to be sure I can either use those (as they are both hooked up to the 8 pin adapter) or if I should go ahead and use first setup. Thank you!