ok am just installing a new pc. Yet I realize, for example , that the cable which connects the psu and the CPU_PWR socket has two sides, one is 8pin and the other one is 4+4. So my question is does it matter which side the cable goes if both sides do fit perfectly? Like is it necessary to put the 4+4 OR 8 pin side to the PSU/CPU socket or it does not matter? Same question goes to the other cables that connect the PSU and other components.