Quote:
Originally Posted by tw
To keep these computer assemblers off the help lines, we tell them ...
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You make it sound like keeping customers from having to call a help line is a bad thing. Seems to me you should add up the peak values for all the components, and get something that is equal to that number. Since it's unlikely that you will find a power supply with exactly that number, you should buy the next size up. And when you are looking at the price tag of the next size up, maybe there is a sale or something on a PS a little bit bigger that makes it a little more attractive.
You don't design for the average, you design for the peak. Imagine if dams were built for average river flow instead of for hundred year floods.