Building a new SFF PC and need to make a custom PCIe (VGA) cable for my EVGA SuperNOVA 650 GM SFX power supply. Cannot find pinout diagrams for this power supply, both on the PSU side of the cable and the GPU/VGA side of the cable. Anyone have this diagram?
 
Thanks!
 

The PSU pinout would need to come from EVGA, but here is a PSU pinout in Post #2 for G2/P2/T2 units..As you can see here, pinouts for BQ/B2/B3/B5/G2/G3/G5/G+/GA/GM/P2/PQ/T2 units take the same cable set, so the PSU pinout would be the same.

Here is the component-end pinout for PCIe 6pin and 8pin.

Component-end pinout is industry standard as specified by Intel and shown as if you are looking into the connector, unless otherwise specified..PSU-end pinout can vary by manufacturer.

Always turn the PSU on for bench testing using the EVGA Detection Tool or a paper clip to be sure the component-end pinout is absolutely correct before connecting to your PC..Other industry standard component-end pinouts are widely available if you search.
 
Hope that helps.