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power pc = how much in electricity costs?
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Nuggets



Joined: 23 Nov 2009
PostPosted: Thu Nov 18, 2010 4:03 am    Post subject: power pc = how much in electricity costs? Reply with quote
Alright, so I've been a pc builder as long as I can remember. I'm on a laptop here in Seoul now, I'm going to go back to visit the states in the summer and was considering bringing back parts to build a mid-grade pc here. The only problem is, I'm kinda scared at how high my electric bill will be if I do so.

I'm looking at running:

I7 9xx cpu
intel mobo
6gb whateva triple channel ram
hd5870

2x2tb green drives.
750psu 80plus

This is just a rough guess at my future PC if I do decide to go ahead and build one. I'm guessing it's going to be in the 500-600watt range, and usage will be around 40 - 50 hr a week.

So, is there anyone who could give me a rough guesstimate at how much my electric bill will go up by? Thanks for any input.
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eamo



Joined: 08 Mar 2003
Location: Shepherd's Bush, 1964.
PostPosted: Thu Nov 18, 2010 4:16 am    Post subject: Reply with quote
Combine the i7 and 5870 with a high-efficiency PSU (80 Plus Bronze or preferably Silver) and you'll not notice a big difference in your power bill.

The 5870 has a great idle function which drops the consumption right down to under 25 watts, I think.

I'd say you could run that PC 24/7 and it would add something like 20,000 won per month to the bill.
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vDroop



Joined: 25 Aug 2010
PostPosted: Thu Nov 18, 2010 4:45 am    Post subject: Reply with quote
For that kind of use, I'd say barely an increase. i7 mobos clock the chip way down when power isn't needed, and your PSU will only draw what it needs from the wall anyway. With a single video card that system won't even pull 400w overclocked at full load.
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Nuggets



Joined: 23 Nov 2009
PostPosted: Thu Nov 18, 2010 4:58 am    Post subject: Reply with quote
Ok, well I guess that isn't too bad at all. My elec bill is already around 18k a month, an extra 20k wouldn't be too bad at all... oh, I don't plan on leaving it on 24/7, so I guess that's even better.
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ttompatz



Joined: 05 Sep 2005
Location: Kwangju, South Korea
PostPosted: Thu Nov 18, 2010 6:52 am    Post subject: Re: power pc = how much in electricity costs? Reply with quote
Nuggets wrote:
Alright, so I've been a pc builder as long as I can remember. I'm on a laptop here in Seoul now, I'm going to go back to visit the states in the summer and was considering bringing back parts to build a mid-grade pc here. The only problem is, I'm kinda scared at how high my electric bill will be if I do so.

I'm looking at running:

I7 9xx cpu
intel mobo
6gb whateva triple channel ram
hd5870

2x2tb green drives.
750psu 80plus

This is just a rough guess at my future PC if I do decide to go ahead and build one. I'm guessing it's going to be in the 500-600watt range, and usage will be around 40 - 50 hr a week.

So, is there anyone who could give me a rough guesstimate at how much my electric bill will go up by? Thanks for any input.


maxed out, 600 watt PS = .6KW

.60 KW * 50 hrs per week = 30kwh per week * your electric rate (varies depending on your overall usage and region).

That is your max and if it isn't running full out (cores operating at 100% all the time) then it will be less (probably by 1/2).

.
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Nuggets



Joined: 23 Nov 2009
PostPosted: Sun Nov 21, 2010 5:36 am    Post subject: Reply with quote
eamo wrote:


The 5870 has a great idle function which drops the consumption right down to under 25 watts, I think.

.


I thought I read something about that a while ago, but I guess the 5870 uses 25w LESS than the 4890. It still uses about 140w at idle. I think....
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eamo



Joined: 08 Mar 2003
Location: Shepherd's Bush, 1964.
PostPosted: Sun Nov 21, 2010 6:10 am    Post subject: Reply with quote
Nuggets wrote:
eamo wrote:


The 5870 has a great idle function which drops the consumption right down to under 25 watts, I think.

.


I thought I read something about that a while ago, but I guess the 5870 uses 25w LESS than the 4890. It still uses about 140w at idle. I think....


Just did a quick check and my memory was not wrong this time......less than 27 watts consumption while running nothing but desktop, i.e. idle.
http://www.techpowerup.com/reviews/ATI/Radeon_HD_5870/28.html
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Nuggets



Joined: 23 Nov 2009
PostPosted: Sun Nov 21, 2010 6:40 am    Post subject: Reply with quote
eamo wrote:
Nuggets wrote:
eamo wrote:


The 5870 has a great idle function which drops the consumption right down to under 25 watts, I think.

.


I thought I read something about that a while ago, but I guess the 5870 uses 25w LESS than the 4890. It still uses about 140w at idle. I think....


Just did a quick check and my memory was not wrong this time......less than 27 watts consumption while running nothing but desktop, i.e. idle.
http://www.techpowerup.com/reviews/ATI/Radeon_HD_5870/28.html



Opps! You're right, I rechecked what I read and it's 'system power consumption' that was stated. Silly me. Point to you good sir.
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Informer



Joined: 21 Sep 2006
Location: Bundang
PostPosted: Sun Nov 21, 2010 2:58 pm    Post subject: Re: power pc = how much in electricity costs? Reply with quote
Nuggets wrote:
Alright, so I've been a pc builder as long as I can remember. I'm on a laptop here in Seoul now, I'm going to go back to visit the states in the summer and was considering bringing back parts to build a mid-grade pc here. The only problem is, I'm kinda scared at how high my electric bill will be if I do so.

I'm looking at running:

I7 9xx cpu
intel mobo
6gb whateva triple channel ram
hd5870

2x2tb green drives.
750psu 80plus

This is just a rough guess at my future PC if I do decide to go ahead and build one. I'm guessing it's going to be in the 500-600watt range, and usage will be around 40 - 50 hr a week.

So, is there anyone who could give me a rough guesstimate at how much my electric bill will go up by? Thanks for any input.


hahaha.. really? 40-50hrs a week? you running a server?

thats a lot of usage.
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eamo



Joined: 08 Mar 2003
Location: Shepherd's Bush, 1964.
PostPosted: Sun Nov 21, 2010 3:10 pm    Post subject: Reply with quote
40-50 hrs a week is a lot of usage?

Er, I've been running my PC 24/7/365 for years! I never turn off, except when going on long vacations.

I download a lot and do other tasks like SETI@home. With a good quality, efficient power supply it really doesn't cost that much per month these days.....the CPU's and GPU's use by far the most juice, however they're much more power efficient than they used to be.
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