Hi. Im trying to work out which plug on my psu goes to my XFX RX580 GPU. It has an 8 pin socket. The psu has a 6+2 with 4 black wires on the lock clip side and 3 yellow and 1 black on the other side. The 4+4 is 4 yellow on lock clip side and 4 black. I dont want to take a chance as yellow on a psu is 12v and could fry the gpu. Your help would be much appreciated.