dz9c

im looking for a power supply. a lot i see have 2 12v rails. i only need one i guess for a graphics card. the graphics card asks for 22amps on a 12 v rail but there are 2 and they only have like 18 amps each. if one isnt being used, does it donate the power to the other?

example: 2 12v rails at 18amps each. use only one graphics card so you get 36 on that one rail. right?

example: 2 12v rails at 18amps each. use only one graphics card so you get 36 on that one rail. right?