Hi friends, honestly I'm an idiot, anyways I'm planning to buy the RTX 3080 or the upcoming AMD rDNA 2 GPUs that needs 3x8 pins to power the GPU, the problem is I have only 2x8 pins on my PSU, how do I install a third 8 pin? Cuz back In the day the asus mars GTX GTX 580 needed 3x8 pins so how...