1
The PSU I have reads 400W on the label. Its a cheap local one and has only 15A on its 12V rails, so I'm sure that its lower than indicated. Is there any way I can measure the real PSU wattage by any software, instrument, or any means. Please do not suggest kill-a-watt meter as its not available in my country.
1Do you want actual consumption, or rated maximum? – pjc50 – 2012-10-29T16:12:30.950
What is on the other parts of the label? 15A at 12V is 180Watt. If there are rails supplying 220 watt via +3.3 or +5 volt then the label might be right. Having written that: 1) Outputting max 45% of the PSU's max rated power via +12v seems rather low. 2) To make thigs more complicates the output numbers added are often bigger that the maximum rated power. Meaning you can not draw the maximum from all rails simultaneously. – Hennes – 2012-10-29T16:58:18.163