How much would 200W cost to run 24/7?

Think you might have meant to post this in tech...

Anyhow, I was always under the impression that 200W was the maximum load a PSU could support so it won't be using 200W all the time, and it'll change depending on what you're doing and what components you've got. I did have a good link somewhere that could estimate depend on your setup, I'll have a search around for it...

Reply 2

Illusionary

19

Well, number of hours per year = 24*365 = 8760
Power use = 200W = 0.2kW
So, in 1 year, total energy use = 0.2*8760 = 1752kWh

Unless there's something complicated I'm missing, that should be it!

Reply 3

whats_its_face

2

1 unit of electricity = 1kW = 12p (approx)

So running one 24/7 should cost around 60p/day i think...

Reply 4

Is this for your web server, Cortez? Just out of interest.

Reply 5

OP

theArchitect

Is this for your web server, Cortez? Just out of interest.

Could have gone in tech I guess but nevermind and I know 200W is the max but I wanna know what the max I'm going to be paying for the electricity is :wink:

And how do you know I'm looking for a web server? :p:

That's what I'm planning yeah, I thought I'd look at Shuttle computers as they have mini PSU's, would one of those be suitable? I don't see any reason why it wouldn't if I had components that were up to the job.

Illusionary and whats_its_face, both your answers give pretty much same price per day so I assume that's correct. That would be about £18 a month at full usage and then I need a seperate broadband connection too :hmmmm:

It will still be be cheaper than the monthly cost at a hosting company I guess but with an initial outlay. Will have to think about it and price up some components.

Reply 6

Cortez

Could have gone in tech I guess but nevermind and I know 200W is the max but I wanna know what the max I'm going to be paying for the electricity is :wink:

And how do you know I'm looking for a web server? :p:

That's what I'm planning yeah, I thought I'd look at Shuttle computers as they have mini PSU's, would one of those be suitable? I don't see any reason why it wouldn't if I had components that were up to the job.

Stalker!

Lol, no, from this thread: http://www.thestudentroom.co.uk/showthread.php?t=343681

Yeah see what you mean that'd give the max you'd be paying. Yeah I would have thought a Shuttle PC would do it - small and fairly quiet. What's the cooling like on them though?

Reply 7

OP

I'm not sure, never used them before but I imagine it's sufficient. I wouldn't have a graphics card in there creating more heat so I reckon it would be ok. Just need to find out how much we pay per kwh now.

Reply 8

Yeah I suppose they're often built for media centre PCs so if they can handle DVDs etc. then serving web pages shouldn't cause much more heat.

It'll probably say on the electricity bill somewhere how much it is per KWh.

Reply 9

JakeThePeg

Current charges for Scottish Power/Manweb are...

Day Rate 10.7p per kWh
Night Rate 4.6p per kWh (white meter 11pm to 6am)
Standing charge 21p per day

Bear in mind that desktop machines aren't designed to be powered on 24 x 7,
and a 200 Watt supply is not that powerful really (especially if several hard
drives are installed). Don't forget to take regular backups 'cos one day
something might just go *pop*

Reply 10

OP

I had a look at out bill, 14p for first 252 and 10p for the rest (I think anyway, unless we don't use enough for an even "cheaper" rate).

So I work that out to be 48p a day at max usage and 10p so most the time it would probably be less than that.

Reply 11

OP

Jaffaholic

Whats the set up youre using? Remember you can underclock CPUs to take reduce power usage. It may even allow you to simple get away with a passive heatsink and a case fan blowing over the top making it silent. In addition to this, if you end up buying a core 2 duo or something, you will find the CPU runs comfortable at much lower voltages than default. For example, an E6300 at 1.86ghz has a default voltage of 1.325v but can run with ease at 1.05v. If your motherboard doesnt suppport the tinkering of cpu voltages, use "crystalcpuid".

Also dont use a PSU which has a higher rating than what you need. PSUs are less efficient when running at 50% of its capacity or less.

http://www.xbitlabs.com/articles/other/display/atx-psu6_8.html

I don't actually have any of the components yet, it's just something I'm thinking about.

Will probably get an AM2 CPU (just one, if you can ... I'm so out of date with comp components at the moment), 1 GB DDR2, small hard drive, dvd rom and that's probably about it? Motherboard of course but that comes with the barebone as far as I know.

I'm not sure if I should do it though, whether a home connection will be reliable enough and whether hosting websites is against the fair usage policy.

Upside is that I get a decent spec server for a similar price to a ****ty dedicated server at a hosting company. E.g. http://www.123-reg.co.uk/dedicated-server-hosting/ £46 a month for a 2Ghz Celeron and 512mb ram :s-smilie:

Reply 12

OP