Which components use which psu rails?

[Haphazard]

Here's what I'm guessing so far:

- A64 CPU: +12v (Older cpu: +5v?)
- HDD/Optical: +12v
- Graphics Card: ????
- Memory: +3v
- USB devices: ????
- Case/HS fans: +12v
- Other: ????


Please correct/complete.

cheers.