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how much money to run a 420w power supply 24/7?

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Garfield

Member
Joined
Dec 1, 2001
Location
New Jersey
since i'm going to be folding 24/7, my computer (of course) is going to be running all the time. i just wanted to know how much money it would cost to run a 420w psu 24/7. i feel guilty sucking up all of this power and then making my parents pay for it, so im going to hand them a couple of bucks (how much it takes) to run this.

so, how much would it be?
 
OP
Garfield

Garfield

Member
Joined
Dec 1, 2001
Location
New Jersey
so could we safely assume, say, $15 a month? I just need a rough estimate, and I think that sounds good.
 

larva

Inactive Moderator
Joined
Jul 12, 2002
power supply efficiency

Most switching power supplies operate at 50-60% effiiciency. Half the power consumed is turned into heat and expelled to the environment. While the 50% rule is fairly accurate for many devices the current draw should be stated on any device carrying UL approval for home use. Only in a perfect world does input=output, and perfection is a pretty rare commodity.