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how do graphics cards and cpus compare to actual space heaters?

post #1 of 7
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in terms of efficiency / $ of electricity.

eg, if I heated a room with a space heater vs heating the same room with a cpu(s) or a graphics card(s).

I tried googling and the closest I can get (and my original guess) is that they are the same. you get the same heat per electricity used with computer chips as you do with a space heater.

plz anyone who thinks this is wrong, can explain why, or fill in any relevant infos here plz.
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post #2 of 7
you get alittle less heat produced per watt since "some" of that electricity is used to do work. however the difference is negligible. so yes essentially if your system uses 500w of power it's like having a 499 w heater running biggrin.gif

the problem with the logic behind using computer as space heater is that space heaters generally use ALOT more power then your computer since most computer system only use about 250w of power under gaming load. and 250w of heat isn't "enough" to act as a space heater unless you are living inside a 5 feet x 5 feet box biggrin.gif

why do you care anyway, it's the middle of summer atm? i'd expect this type of question come December or something biggrin.gif
post #3 of 7
Electricity goes to either work done (by CPU/GPU/engine/etc) or heat + noise (for fans/engines/impellers). Energy is neither created nor destroyed tongue.gif

If you want a spaceheater run a AMD-8350 (~ 220W at 4.8GHz , ~300W at 4.8Ghz) / i7-3930k( @4.7Ghz= about 250W) / Intel Core i7-3960X Extreme Edition (~290-300W at 4.7Ghz) with 4x HD7970 (300W TDP when heavily overclocked , each .. but it's 250W rated TDP)

A 5GHz i5-3570k , i7-3770k, or i5-2500k will only be about 160-170W in comparison.

FX-8350 @ 4.5GHz and 2x7970s = about 500W

That's why Folding / BOINC when it's winter is nice. In the summer, no.
Edited by AlphaC - 7/12/13 at 5:56pm
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post #4 of 7
Ah, folding = my winter heater
 
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post #5 of 7
Thread Starter 
as long as its nearly the same that's all I need to know really.

im not thinking of it in terms of using a computer practically as a space heater. it turns out my computer is probably a pretty good space heater tho running both cards maxed out.

if you must know I was thinking of the practicality of offsetting the electrical costs of bitcoin mining with actually useful heating. as far as I can tell the electricity costs would then be negligible providing you actually had a place that needed to be heated 24/7, or you were inclined to mine in shifts as heating is required.

fyi it probably doesn't matter anyways as there is going to be a huge hardware investment to get into mining, aswell as the continuing risk of collapse or legal issues, and this also faces the handful of other cryptocurrencies which haven't reached anywhere near bitcoin growth and acceptance.
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post #6 of 7
Thread Starter 
Quote:
Originally Posted by AlphaC View Post

Electricity goes to either work done (by CPU/GPU/engine/etc) or heat + noise (for fans/engines/impellers). Energy is neither created nor destroyed tongue.gif

If you want a spaceheater run a AMD-8350 (~ 220W at 4.8GHz) / i7-3930k( @4.7Ghz= about 250W) with 4x HD7970 (300W TDP when heavily overclocked , each .. but it's 250W rated TDP)

That's why Folding / BOINC when it's winter is nice. In the summer, no.

so like when were talking about work done... its not exactly easy to tell how much "work" a chip does...

is the 99% > heat

about right?

if I ran my rig for gaming, how much of my electricity is turning into heat?
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post #7 of 7
glad i dont follow under most users with my system.
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