Found: Power Supply (Peak) Wattage Calculator

[Infin8Cyn]

This has most Systems from AMD K6's to Opterons, to old Intel's and Server specs. Also has video card's and such. My system came to a total of 410Watts required and I'm powering it with a 430W. :-X

Anywho, try it out:
http://www.jscustompcs.com/power_supply/

[edge]

Hmmm...Mine only came to 302. I'm kind of surprised. It's running on a 350 Watt PSU.

Good find

[Deacon]

Ugh. How silly. Now what'd be nice is an actual piece of software to pull all that info (and more?) and do its calculations based on that. Additionally, seeing an actual real-time monitor would be cool "How much am I drawing RIGHT NOW?"

[Kuronekosama]

It's not too bad as a general guideline. I'm surprised my system came in at under 350 though hehe.

[Bigity]

Hell, I came in with 236.

[PhoenixGeek]

They Don't have a selction for my Meteor Light or for my Fiance's Fancy Lighted Case But I doubt they use more than 5v each.

I am pulling in less than I thought, just over 300

[RandyWang]

While my machine is incapable of running that software (heh, there's no option for "PowerPC"), it's an extremely low power machine - the processor's maximum draw is approximately 5 Watts, and it has no internal fan. All that's left to powered is the CRT monitor, the hard drive when it spins, the RAM and the optical drive when there's a disk in there.

Given that the Mac Mini (a machine with a similar design for the purposes of power draw) differs mainly in it's inclusion of a fan and a much more powerful processor, my best guess would be this machine draws up to 30-50W compared to the Mini's 80W.

Sadly, this means that my computer doesn't run hot enough to use as a heater.

[Arc Orion]

201 here, on a 250 power supply.

[BtEO]

356... I always figured it would probably be lower than I expected.
Also, factor in that when my actual equipment wasn't listed I always moved up a notch, and it turns out my 450 shouldn't even be breaking a sweat yet.

[Kurosen]

just under 300... on a 480...

i was planning on getting a new 500W PSU when i rebuilt my computer... tho i dunno if i can find the one i want in 400

oh well... guess ill have to put more shit into my case... ;;

[KaymeeraUnleashed]

Running 299W on a 240W PS...

I'm scared...

[Infin8Cyn]

[quote="PhoenixGeek";p="503951"]They Don't have a selction for my Meteor Light or for my Fiance's Fancy Lighted Case But I doubt they use more than 5v each.

I am pulling in less than I thought, just over 300[/quote]

You don't measure power consumption in volts, hence the Watts terminology

[quote="RandyWang";p="503986"]
Given that the Mac Mini (a machine with a similar design for the purposes of power draw) differs mainly in it's inclusion of a fan and a much more powerful processor, my best guess would be this machine draws up to 30-50W compared to the Mini's 80W.[/quote]
Given that it's a mac mini, you shouldn't have anything to worry about from a factory spec. machine.
[quote="KaymeeraUnleashed";p="504185"]Running 299W on a 240W PS...

I'm scared...[/quote]
There's probably good reason for that.

I agree, it would be nice to see an actual usage, but PSU's and Mobo's haven't advanced to that stage that I've seen. I wish..

[Vektor T. Gecko]

you could always hook a voltmeter up across the PS, and an ammeter in line with the AC input for the power supply, and find out how much it's drawing from the wall socket, but because power supplies differ in their efficiency, that wouldn't really tell you how much power your components are drawing, just how much power your power supply has to draw to convert to DC to keep them powered.

You could also probably get away without the voltmeter and just estimate the voltage, since it's going to be roughly predictable anyway, although it will vary to some extent.

[Koreth]

so if you put an inductive ampmeter on the line into the power supply and measured amps, yeah you could get a rough gestimate of how much wattage is being used. In the US, voltage is pretty standard for a wall outlet, 110~120V AC 60hz. Or at least it is supposed to be.

I personally would like to see the motherboard measureing wattage draw, or at the very least amperage draw, so wattage could be roughly calculated. I do recall seeing PSUs on newegg that have a LED readout display which shows the current wattage draw.

[Martin Blank]

You'd need a data connection to the PSU, which might be tricky considering the heat levels inside of those things.

Then again, it might not be too expensive to have a power-measuring circuit in all devices.