Btw I way 4 cables that connect the PSU to the graphics card (GTX 980 Ti, which has a 8 pin and 6 pin), each cable has one 6 pin and one 8 pin (6 + 2). My question is do I use only 1 cable to connect to the graphics card. Or should I use 2 (1 for the 8 pin and 1 for the 6)