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I'm on Windows 7 on my Mac via Bootcamp... I notice that the fan goes from 3000 RPM to 5000-6000 RPM when Chrome is running and most of the time it's doing nothing. The CPU in the task manager for Chrome is 2-4%. What can I do?

PS: I think this problem became more obvious in past days... also in past days the outside temperature got higher (summer is finally here:)... could about 10 degrees more in outside temeprature influence this so much?

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Did you recently cleaned your PC ? A vaccum cleaner and dry air spraycan are your best friends against noisy PC. –  bokan Jun 24 '13 at 7:29

2 Answers 2

up vote 3 down vote accepted

There are Chrome extensions that let you suspend activity after a defined period. This may reduce your fan's RPM:

https://chrome.google.com/webstore/detail/the-great-suspender/klbibkeccnjlkjkiokjodocebajanakg?hl=en

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trying all the other things first, but will try this extension as well, thanx! –  David Krmpotic Jun 20 '13 at 17:32
    
so... this extension certainly helps... too bad I can't fix the problem without it.. but for now let it be.. thank you very much! –  David Krmpotic Jun 20 '13 at 17:54

Maybe flash is hogging the CPU. It runs as a separate process.

I'll advise to install adblock to get rid of flash ads wich are consuming most of the ressources while browsing.

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none of the tabs have flash running.. and I already have adblock. and the interesting (strange) thing to me is that CPU usage is a few percent... so don't know why the fan speed is up.. ut definitely when I close Chrome, fan speed gets down to 3k RPM –  David Krmpotic Jun 19 '13 at 16:20
    
That's weird. Are you sure it is the CPU fan speed ? Maybe it's the GPU (or embedded GPU) that is changing mode when chrome is open. Some kind of optimus technology that switch GPU behavior. –  bokan Jun 20 '13 at 9:05
    
Most probably CPU fan.. I can hear the typical fan noise... but as I wrote above (PS) it really may be that because of 10 degrees hotter outside temperature fans need to work harder... even 6000 RPM almost constantly... could be? –  David Krmpotic Jun 20 '13 at 13:18
    
getting really tired of this :S spent the entire day trying to spot the pattern, but there is almost none.. except when I close Chrome, fan rpm goes down... sometimes it goes up after each tab opened and then after some time it goes down, sometimes it stays at 6000rpm.. tried in incognito mode without the extensions and it behaves similarly :/ Increased outside temperature causes higher rpm for sure, but the behaviour is still weird (like maximum rpm when there is no activity).. also tried IE9 and it didn't increase the fan speed. –  David Krmpotic Jun 20 '13 at 17:35
    
UPDATE: IE also increases the fan speed after all... so it's some kind of a system issue... I posted another question here: apple.stackexchange.com/questions/94508/6000-rpm-at-65c –  David Krmpotic Jun 20 '13 at 22:58

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