Turning PC off at high temps

JohnJSal

JohnJSal

Active Member
Just a random question I thought about. If you have your PC running for a long time and the CPU (among other things) is running hot, how is it not harmful when you shut down the computer that all the fans just immediately turn off? Wouldn't that leave everything too hot, or does it not matter as long as they [aren't] actively running?

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CPU and GPU temperatures crash once they are not in use. Run a temperature monitoring program next time you play a game, and alt tab out in the middle, the temperature should quickly drop.
 
diduknowthat said:
CPU and GPU temperatures crash once they are not in use. Run a temperature monitoring program next time you play a game, and alt tab out in the middle, the temperature should quickly drop.
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Well, one thing I noticed on my laptop was that when I played a game, the fan would turn to high and get very loud. This usually stayed on several minutes after I left the game, which always made me worry about immediately turning off the computer after I played. I usually waited a while until the fan spun down a little.
 
That's normal. You have Cool n' Quiet or SMART Fan. It automatically adjusts the fan RPMs as the temperature rises :)
 
^ Laptops have much less room to dissipate heat, so the fans tend to run a bit longer. PC's, on the other hand, have much more room inside, and the a properly installed HSF will suck heat from a CPU very quickly. In turn, after shutdown, your CPU will drop anywhere from from 10-20*C within a few seconds.
 
Its fine, a CPU or GPU doesnt have enough mass, like say a car engine that has internal heat build up that still dissipates after the engine is turned off. A CPU/GPU cools down pretty quick after the current is shut off.
 
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fortyways said:
http://www.endpcnoise.com/cgi-bin/e/std/sku=prolong.html

You could get that if you're really worried about it. But yeah, as others have said you don't need it. Your temps do drop dramatically when the CPU and other components stop receiving power.

Another thing to consider is that components' non-operating (storage) temp tolerances are usually a lot higher than their operating tolerances.
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That's kind of cool, but it seems like, according to you guys, it's a waste of money since heat isn't an issue when the PC is off. :)
 
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