Is it safe...

[AlNom]

...to use more than one powersupply for a given system? Just a..hypothetical question.

let's say I want to connect the main mobo power to one PSU, and then use a completely different PSU to power the components. It should be fine, right?

 

[_xxx_]

Should be fine, but could be bad. Depends on many factors.

 

[RussSchultz]

Not good. Two power supplies won't give the exact same voltages for any of the outputs, causing current loops in the system.

What you'd need to do is tie the +5v, +12v, -12v together as close to the power supply, decouple with caps, etc. It really would be easier to just buy a larger power supply.

 

[AlNom]

ah ok. Just curious, thanks.