How much to run a pc
Author
Discussion

ChrisRS

Original Poster:

1,787 posts

237 months

Thursday 11th February 2010
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I'm in the process of setting up a home server, does anyone know the rough costs of leaving a PC on 24/7 as a monthly figure?

Silverbullet767

10,978 posts

226 months

Thursday 11th February 2010
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It can vary on lots of things, I reckon about £7-10 a month.

10JH

2,070 posts

214 months

Thursday 11th February 2010
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I've read before leaving a PC on is about the same as leaving a 60Watt light bulb on. So shouldn't be too much. Dunno if that included powering a monitor though.

Soft Top

1,475 posts

238 months

Thursday 11th February 2010
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Silverbullet767 said:
It can vary on lots of things, I reckon about £7-10 a month.
Youch! Don't tell my wife or I'll have to lose the mail server!

Seriously is it really that much? If so I'm glad I gave up the second server and reconciled it all into one.

FourWheelDrift

91,471 posts

304 months

Thursday 11th February 2010
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I ran a systems check the other month.

Monitor 90w
HDD 40w
CPU 45w
GFX card 24w. Would go up under load.
other (fans etc) 15w

Total 214w estimated normal power usage.

Considering my GFX card (ATi 5870) recommends a PSU of at least 500W the usage can go a fair deal when running a GFX intensive game. I actually have a 700w PSU in it.

So the equivalent of 4 light bulbs for normal use.

Man-At-Arms

5,915 posts

199 months

Thursday 11th February 2010
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Soft Top said:
Seriously is it really that much? If so I'm glad I gave up the second server and reconciled it all into one.
i'm not convinced about this virtualisation thing
if you had a hardware failure, then you'd be totally fooked
but with 2+ servers, at least there's another unit you can fall onto

Timberwolf

5,374 posts

238 months

Thursday 11th February 2010
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Depends a lot on the PC. Mine range from 15W to about 125W when left on and not doing anything very much as a server would. That's just the base unit and not the monitor, except for the laptops - although they usually go to some kind of "screen off" power saving strategy.

I would say somewhere between 60-100W for a "typical" desktop computer with a hard drive or two if you're not going to put any particularly crazy hardware in it. Go with the higher figure - about 70kWh a month if I haven't made any stupid mistakes - and you probably won't be too shocked by any electricity bills.

(You can buy various plug-in gadgets that'll give you a reasonable power draw figure for any electrical gadget; they're cheap enough to be worth having one around just for the sake of answering "what does this cost to keep running?" questions.)

Edited by Timberwolf on Thursday 11th February 21:52

lost in espace

6,434 posts

227 months

Thursday 11th February 2010
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The Gadget Show said on Mon that an Xbox360 costs £210pa if left on 24x7!

Smiler.

11,752 posts

250 months

Thursday 11th February 2010
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For a constant load of 150 watts, & for a unit rate of 12 pence: £157.68 per annum.


AlexC1981

5,462 posts

237 months

Thursday 11th February 2010
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Interesting fact for the day:

Boiling a full kettle from cold costs around the same as leaving a 100W light bulb on for 10 hours!

olimeads

3,927 posts

208 months

Thursday 11th February 2010
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AlexC1981 said:
Interesting fact for the day:

Boiling a full kettle from cold costs around the same as leaving a 100W light bulb on for 10 hours!
i will stick the little handle down so that it stays hot, save money too.

ymwoods

2,194 posts

197 months

Friday 12th February 2010
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When I was running gaming servers from home it added £50 a quarter onto the electric bill. They were beasty servers though (but dont remember the specific wattage) so having a less beefy server will obviously take that price down a lot.

Road2Ruin

6,094 posts

236 months

Friday 12th February 2010
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Check this article out....

http://www.tomshardware.com/reviews/truth-pc-power...

But with a modern pc you may get away with much less as components are a lot more frugal now.

Pete

mcflurry

9,182 posts

273 months

Friday 12th February 2010
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A couple of people I know have mac minis running 24/7 instead of pcs and saved about 25-30p a day in electrickery costs smile


FlossyThePig

4,136 posts

263 months

Friday 12th February 2010
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What are you going to use the server for?

It won't need a monitor or fancy graphics card, so power can be saved there.

Mini ITX based ARTiGO A2000 Barebones Storage Server can take 2 HD drives and has a 75W external power supply (17W without disks)

ThatPhilBrettGuy

11,810 posts

260 months

Friday 12th February 2010
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AlexC1981 said:
Interesting fact for the day:

Boiling a full kettle from cold costs around the same as leaving a 100W light bulb on for 10 hours!
That is complete bks.

On those figures with a 3Kw fast boil kettle, it'd take over 20 minutes to boil. Correct if your kettle is the size of a small bath I suppose.

Dibby

423 posts

220 months

Friday 12th February 2010
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I've got a server file storage/ torrent box running 24/7. It's an old laptop a mate smashed the screen on running Linux. Stable, quiet, low power and free, does the job nicely.

lestag

4,614 posts

296 months

Saturday 13th February 2010
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Man-At-Arms said:
Soft Top said:
Seriously is it really that much? If so I'm glad I gave up the second server and reconciled it all into one.
i'm not convinced about this virtualisation thing
if you had a hardware failure, then you'd be totally fooked
but with 2+ servers, at least there's another unit you can fall onto
raided drives limit data corruption, a spare power supply and fan would limit a significant majority of hardware failures

AlexC1981

5,462 posts

237 months

Saturday 13th February 2010
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ThatPhilBrettGuy said:
AlexC1981 said:
Interesting fact for the day:

Boiling a full kettle from cold costs around the same as leaving a 100W light bulb on for 10 hours!
That is complete bks.

On those figures with a 3Kw fast boil kettle, it'd take over 20 minutes to boil. Correct if your kettle is the size of a small bath I suppose.
I am forced to admit to my great shame you are absolutely correct. It was my science teacher at school who told me that, some 12 years ago and I've never checked it.

Perhaps he said one hour and I wasnt listening blabla

fastfreddy

8,577 posts

257 months

Saturday 13th February 2010
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I've recently been looking at our electricity costs very carefully to see what difference we can make by turning things off completely at night, replacing lights with low energy lamps, etc. etc.

I've fitted a current consumption meter at the main meter to measure the total current we use at any one time and with small appliances where that meter isn't accurate enough to register a change, I measured the current with a plug in meter, so I now have a very accurate breakdown of our electricity usage in each room and for each appliance.

The results were quite surprising in some cases and have caused me to be proactive about saving energy (and our money!).

For instance, a big flat screen TV still consumes 30W if you turn it off using the remote, but 18W if you use the button on the TV itself and of course 0W if turned off at the socket.

We've got a lot of dimmable low-voltage lights in one room and they consume remarkably little power considering their output - something like 20W in total when we have them on in the evening.

The PCs were a bone of contention before as I prefer to leave them on 24/7 for reliability, but once I saw how much my main PC is using, I have taken to powering it down at night. The other PCs are left on 24/7 as they are handling stuff like email and security cameras so they need to be available at all times.

In one room I've got 2 x Dell mini tower PCs and my main PC which is fairly hefty with a GTX275 graphics card and a couple of other boards which all consume enough for me to upgrade the original 500W PSU to a 850W one recently.

The main PC when running takes 195W and the 24" flatscreen monitor a further 30W
One Dell takes 65W and its monitor is 39W
The other Dell takes 54W and its monitor is 22W

So the cost to me during each 24 hour period is £0.22-£0.26 for each Dell but £0.62 for the big PC (or £226 per year if left on 24/7).

It's still a bit scary to look at the current meter last thing at night once all the lights, TVs etc. are off and see that we are still using well over 1kW, but it's just not practical to power absolutely everything off.

HTH


Edited by fastfreddy on Saturday 13th February 12:24