So I heard something about some PSUs do not have 'real' watts and have less or sth. like that, what does that mean?
And does this PSU have all real watts? http://es.pcpartpicker.com/part/seasonic-power-supply-m12ii520bronze
And does this PSU have all real watts? http://es.pcpartpicker.com/part/seasonic-power-supply-m12ii520bronze