How to know PSU wattage

[blueboy92]

I have an ETON PSU mode no. PS-21. It doesnt say anything about watts. There is a table that shows just AC input and DC output.

DC output:
+3.3V - 23A
+12V - 25A
-12V - 0.5A

+5V - 22A
-5V - 0.5A
+5Vsb - 2.5A

Is there a way to know the wattage from this info?

 

[rolli59]

Multiply the volts and the amps and add them up. It is as close as you get but round down at the end to the closest even number like 400 or 450.