I just purchased a AMD Radeon RX 6950 XT, it didn't come with any PSU cables. I have a Corsair RMX RM 1000x PSU and hooked up the PSU cable to the GPU. But it's a Y- cable. One end goes in the PSU and the other end has TWO 4 pin cables on it which I plugged into the GPU. But now I'm wondering if I need TWO 4 pin cables, so that two go in the GPU and two in the PSU. Does it really matter? I don't plan on OC as the 6950XT is already very powerful.