I have a rosewill RG700-S12 power supply which is 700 w etc. But I already have 1 - 2x6 pin connector to 8 pin. But I need another 8 pin for the GPU to function. It is a 1070 TI , could I use a molex adapter to do this safely? If I am running a risk what could happen? Do I need to use a certain wire running from my psu? Please help asap.