Which cables go where???

teamrw

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Dec 2, 2013
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i have an msi gtx 770 and it came with 2 red 6 to 8 pin cables and then i have a black one that came with my rm750 and i dont know which cable goes where. the black one is the one that says pcie and it has a seperated thing like 6pin + 2pin and i dont know which one it goes to on the graphics card. the graphics card has 2 8 pin slots on it and so do i plug in the black cable that came with my psu???? plz help im really lost.