per jessen ueecomputerorg carlos e r wrote think worth noting somewhat highend system like still uses barely 250w _full_ load still dont know new measurement gadgets trusted mean dont know bad dont know trusted cant really think reason guess could find welldefined load large wattage resistor instance check important thing power needed internal dc lines one said mb nowdays uses power 12 v line also video card uses dont know plus fans high speed drives sum close 10 amps 350w unit supply 10 instance really need higher wattage power supply need much power one lines uses much power powersupply higher output rating 12v line youre right point taken ie peak power spin 28 amps 12v line 08a avg maximum seeks power supply must able handle true mb uses also line problems well although measurement device measure peaks harddisk spinup time 345 seconds think would seen excess load startup machine used 175w per jessen zürich wed 06 aug 2008 052509 0100 opensuse ot much power pc really consume