I have a diamond radeon hd 7750 GPU and I've been trying to find the 6 pin socket to plug the power supply in to for like 30 minutes now.. I can't find it?? How do I plug the GPU in to my dang power supply?? Please help me someone.. Am I supposed to plug the PSU 6 pin connector in to the card or my motherboard? I can't find a 6 pin slot on either of them.. plz help?? Someone told me that my GPU doesn't need to be plugged in to a PSU. Is that true??