Math-ish question.

[GnatDaGnat]

If the difference in TDP between two GPUs is 60W, how much more will the greater one cost me to run per year than the lesser one, given that each additional Watt-hour is 1.21USD per year? I'm probably being stupid but I don't understand how I know how to figure out much power over time a given wattage costs me. Can anyone do the math? Thanks.

[rmac52]

TDP watts have nothing to do with how much electricity it draws.  TDP is a measure of heat output.

[The Official Czex]

If the difference in TDP between two GPUs is 60W, how much more will the greater one cost me to run per year than the lesser one, given that each additional Watt-hour is 1.21USD per year? I'm probably being stupid but I don't understand how I know how to figure out much power over time a given wattage costs me. Can anyone do the math? Thanks.

 

TDP = heat output, not power draw. Also, how long would your PC be on for throughout a given day? 

[GnatDaGnat]

TDP watts have nothing to do with how much electricity it draws.  TDP is a measure of heat output.

 

TDP = heat output, not power draw. Also, how long would your PC be on for throughout a given day? 

 

That's what I thought, but then why is it stated in Watts? Also, to answer your question, 24 hours - dedicated folding machine with decent cooling.

[GnatDaGnat]

That's what I thought, but then why is it stated in Watts? Also, to answer your question, 24 hours - dedicated folding machine with decent cooling.

 

nevermind, answered my own question, being dumb

[The Official Czex]

That's what I thought, but then why is it stated in Watts? Also, to answer your question, 24 hours - dedicated folding machine with decent cooling.

 

Watts are a measurement of energy. TDP measures thermal energy expended in watts.

[Howhurl]

Just to go along with the question, assuming the 2 gpus has a power draw difference of 60W, using the PC 8 hours a day for 365 days, you're looking at about 212 dollars difference in power bill (very rough calculations, correct me if i'm wrong).

[Mujteba]

That's what I thought, but then why is it stated in Watts? Also, to answer your question, 24 hours - dedicated folding machine with decent cooling.

Power (Watts) = Energy (Joules) / Time (seconds)

[GnatDaGnat]

Watts are a measurement of energy. TDP measures thermal energy expended in watts.

 

Yeah I realized that the minute I responded... but anyway I would still like to know something: How much would a PC estimated at 306W power draw cost per year if a kWh is $1.21 int eh electric bill.

[SansVarnic]

This might help if your curious about the math aspect of the thing.

https://www.physicsforums.com/threads/watts-to-heat.271563/

[GnatDaGnat]

Power (Watts) = Energy (Joules) / Time (seconds)

 

Yeah I got that already but thanks

[GnatDaGnat]

This might help if your curious about the math aspect of the thing.

https://www.physicsforums.com/threads/watts-to-heat.271563/

 

Thanks - but I also would ultimately like to know how much as PC drawing approx. 306W costs me per year if my bill $1.21/add. Wh

[SansVarnic]

Thanks - but I also would ultimately like to know how much as PC drawing approx. 306W costs me per year if my bill $1.21/add. Wh

 

You could use one of these.

http://www.amazon.com/P3-P4400-Electricity-Usage-Monitor/dp/B00009MDBU

 

Its best way your going to know unless you can find a voltage monitoring software for your pc. I know of none that gives total usage.

HWMonitor give component voltage usage.

 

*edit

http://www.cpuid.com/softwares/hwmonitor.html

Edited November 3, 2015 by SansVarnic

[GnatDaGnat]

You could use one of these.

http://www.amazon.com/P3-P4400-Electricity-Usage-Monitor/dp/B00009MDBU

 

Its best way your going to know unless you can find a voltage monitoring software for your pc. I know of none that gives total usage.

HWMonitor give component voltage usage.

 

*edit

http://www.cpuid.com/softwares/hwmonitor.html

 

Useful stuff, thanks.

[GnatDaGnat]

I'm good now; got everything straightened out in my head Thank you everyone

[tobben]

If you have figured out that you literally pay 1.21 dollars for each watt expended continuously 

throughout a year, why don't you just do 60*1.21 = 72.6$ As you will be pulling an additional 

60 watt 24/7

 

Or am i misunderstanding something? You certainly can't be paying 1.21$ pr kw/h because 

that would be the most expensive electricity i have ever heard of by about 6 fold. 

[GnatDaGnat]

If you have figured out that you literally pay 1.21 dollars for each watt expended continuously 

throughout a year, why don't you just do 60*1.21 = 72.6$ As you will be pulling an additional 

60 watt 24/7

 

Or am i misunderstanding something? You certainly can't be paying 1.21$ pr kw/h because 

that would be the most expensive electricity i have ever heard of by about 6 fold. 

 

It's 1.21 per wh not kwh And I was being stupid - I read 60W as power draw when it is 60 J/s of energy in heat output. I solved my own problem in the end; thanks though

[Deil Grist]

TDP watts have nothing to do with how much electricity it draws.  TDP is a measure of heat output.

And the heat output is directly related to the efficiency at which the component consumes electricity. 95w TDP does not necessarily translate to 95w of electricity consumed, but a higher TDP indicates higher power draw for components of the same generation. 

[GnatDaGnat]

And the heat output is directly related to the efficiency at which the component consumes electricity. 95w TDP does not necessarily translate to 95w of electricity consumed, but a higher TDP indicates higher power draw for components of the same generation. 

 

Yeah.. but it's not a direct correlation, so when talking about power draw, TDP can essentially be ignored. I made a mistake when I made this post of thinking they were the same thing, but I've figured it all out now.

[Sauron]

That's what I thought, but then why is it stated in Watts? Also, to answer your question, 24 hours - dedicated folding machine with decent cooling.

 

Watts are a measure of energy over time. In this case thermal energy. They don't just apply to electrical energy.

[GnatDaGnat]

Watts are a measure of energy over time. In this case thermal energy. They don't just apply to electrical energy.

 

Yeah I got that a while ago

[rmac52]

And the heat output is directly related to the efficiency at which the component consumes electricity. 95w TDP does not necessarily translate to 95w of electricity consumed, but a higher TDP indicates higher power draw for components of the same generation.

Was that aimed at me or just quoting me?

[GnatDaGnat]

Was that aimed at me or just quoting me?

 

I feel like it was aimed at you bro

[Deil Grist]

Was that aimed at me or just quoting me?

It was directed at you. What I was getting at is it's not that the TDP has nothing to do with power consumption; it's related to it. Just a minor correction.

[tobben]

It was directed at you. What I was getting at is it's not that the TDP has nothing to do with power consumption; it's related to it. Just a minor correction.

How is it minor?

 

power draw = heat output

 

Where do you think the heat is coming from in the first place? and it's not like 1 traditional silicon based chip is

somehow magically immensely more efficient and physics defying than the other... 

 

 

EDIT: Oh wait, i just read your comment again, being on whether power consumption is related to TPD or not,

well yes. That is a minor but not by any means direct correlation.