I just purchased an EVGA GTX 670 FTW and I have a question about where I should have my graphics card plugged into. In my computer, I am using the PCI-E cables that run off of the same part of the power supply as my motherboard to power my graphics card. I'm not using the red molex connectors that are labled PCI-E under them. This is where my question is. Should I switch my graphics card to be using those red molex connectors? Does it really make a difference? Thank you in advance for your time and here are some pictures of my power supply to give more detail about my question.
Your set up is correct, you have a PCIe 6+2 pin and PCIe 6 pin which are not modular (nor red - assuming the TT black widow 850) - any PCIe power needs beyond that will need to come from the red connectors.
Your bottom fan set up is fine
Hope it helps