Psu wattage help Tags: Power Supplies Components Last response: April 10, 2011 11:21 PM in Components Share proton9 April 10, 2011 10:30:18 PM my cheapo psu has 1 12v rail at 20A, - 12v at 0.8A, 3.3v at 25A, 5v at 25A and 5vsb at 2A what is its wattage then, is it near about 450? More about : psu wattage | E-mail me updates | Report abuse Register or log in to remove delluser1 Power supply Master April 10, 2011 10:35:03 PM It should tell you on the label where you got the rest of the info. No way anyone could tell from those numbers. | Report abuse proton9 April 10, 2011 10:36:56 PM theres nothing on the label except those ratings | Report abuse delluser1 Power supply Master April 10, 2011 10:37:35 PM Get rid of it. | Report abuse proton9 April 10, 2011 11:07:33 PM got my answer http://www.pcguide.com/ref/power/sup/output.htm | Report abuse delluser1 Power supply Master April 10, 2011 11:21:10 PM proton9 said:got my answer http://www.pcguide.com/ref/power/sup/output.htm I'm going to take a guess and say that you looked into the math on the 2nd page, if so use it on these numbers +12v = 18a +5v = 22a +3.3v = 13a +5vsb = 2a -12v = .3a +5v and +3.3v = 140 watts I'll come back to see what that adds up to. | Report abuse Register or log in to remove Ask the community Publish Tom's Hardware>Forum>Components>Psu wattage help> Related ressources: ForumPSU wattage help ForumAppropriate PSU wattage HELP ! ForumHow much wattage ? Help with PSU for new build ForumHelp with choosing PSU wattage ForumPSU Wattage Help !? ForumNeed PSU Help ! What wattage ?? ForumPSU wattage concern. Please help . ForumPSU wattage help and recommendations..ordering new build tomorrow ForumFirst PC Build - PSU Wattage ? ForumWhat is my PSU wattage ? ForumPsu wattage ForumCan somone help me choose what psu wattage i need ?? ForumPsu wattage ForumWhich wattage of PSU and is everything compatible? ForumPSU wattage concern ForumHelp Calculating PSU Wattage Needed! ForumHelp with PSU wattage Forum212 evo fan replacement Forum[Solved] UPS vs PSU [True and Myths] Forum[Solved] Keyboard help More resources Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !