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Why is load hotter than Idle?

post #1 of 8
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hey this question may have been asked before....but why is a CPU, or anything for that matter, hotter when under load than idle....isnt it still doing the same amount of cycles in idle mode? what causes the heat? (and why dont they sweat?)
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post #2 of 8
its exactly why when you run you feel hotter than when you are just standing still you are doing more than one thing now...and why a processer dosnt sweat is because it has other means of cooling

is this a joke?
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post #3 of 8
"In basic terms, a CPU is a collection of millions of microscopic electronic 'switches', all crammed into a tiny space known as its 'core'. Every time a single 'switch' operates, it generates a tiny amount of heat. Whenever the CPU is working inside your PC, millions of these switches are operating thousands of times per second. The collective heat generated can be quite incredible, especially if the CPU is very busy.

To put this in real terms, consider a small room containing a single lit candle. It's not very likely that the single flame of the candle will noticeably warm up the room. Put a hundred candles in the room and after a few hours, you might just be able to feel an increase in the room temperature.
Consider now, cramming millions of candles into the room. It won't be very long at all before the temperature in the room becomes uncomfortably high.

To create faster CPU speeds, manufacturers need to add more and more 'switches' to the 'core' of the CPU, vastly increasing the quantity of heat generated by its operation."
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post #4 of 8
No, sooth, this has NOT been asked before because it is blatantly obvious. The more work a transistor is doing the more heat it expells. This is simple common sense and very simple physics. I hope I didn't offend you or anything, im just saying. mike-z's analogy was pretty simple but effective

EDIT/// intelc4004's analogy was even better! nice.
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post #5 of 8
Thread Starter 
Quote:
Originally Posted by mike-z
its exactly why when you run you feel hotter than when you are just standing still you are doing more than one thing now...and why a processer dosnt sweat is because it has other means of cooling

is this a joke?
lol yes that was a joke! cmon thinking they would sweat lol thats just stupid.... or did u not see that guy laughing?!?

but i still dont have a good answer....my CPU is doing 2218GHz, Idle or Load....so why is there more heat?
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post #6 of 8
It's at that speed. Look at this way. You have the same amount of mucles whether you're sitting down or running, same as the processor power. But when you're running instead of sitting, you're initiating more of the muscles need to do the required work.

And if you still don't get it, then I think you're just being silly and wasting time, kthx.
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post #7 of 8
Quote:
but i still dont have a good answer....my CPU is doing 2218GHz, Idle or Load....so why is there more heat?
ok if you still really dont know and everyone who tryed to explain to you failed there must be something rong. "Stuff" in general gets hotter when more things are happening in idle the computer is doing one thing(almost)showing you a screen and when it is loading it is doing 2(or more) things loading and showing you the screen.
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post #8 of 8
Thread Starter 
Quote:
Originally Posted by JoMaMaz
It's at that speed. Look at this way. You have the same amount of mucles whether you're sitting down or running, same as the processor power. But when you're running instead of sitting, you're initiating more of the muscles need to do the required work.

And if you still don't get it, then I think you're just being silly and wasting time, kthx.
ooookkk good explanation....thanks..... i can be pretty stupid at times, makes me wonder how i got into computers
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