Desktops forum: Fan speeds up - Is this a problem?

It just means the fan sensor thought it was too warm and cooled it off. Not busted.

However one area of maintenance few seem to do is that yearly dustoff of the heatsinks and inside the PC. PCs are not zero maintenance items.

Bob

Modern operating BIOS' and motherboards interact dynamically in real-time. There is a thermal sensor in the MoBo which the BIOS tests at start-up as part of the Power-On Self-Test (POST) and periodically during the operation of the computer. Initially the CPU cooler fan starts up at full speed, then tapers down to a proper speed as the MoBo and BIOS talk to one another, keeping the CPU at an optimum temperature throughout its operation.

Short answer? No problem. Your "whooshing" fan is just "hunting" for its best, most optimum operating speed.

Make sure your air vents are clear. PC's are great at attracting dust. My Dimension E510 is constantly plugging up in the air intake (I have several shedding dogs in the house plus a lot of dust.). When I hear the fan speed up, I know it's time to clean the intake.

i have an asus k8n-e deluxe, this motherboard comes with A.I which not only reduces the chances of total failure of the pc in times of crisis but also it has the ability to reduce the temperature of the pc components by increasing the fan speed. this process is part of a program built into the bios called "cool and quiet" when the pc is cool its quiet but as the temp increases due to gaming or demanding applications running the fans can be heard and, on the fan controller i have installed to suppliment this process, seen to increase the speed thus increasing the noise and cooling capabilities.
one possible answer to keeping the noise down, is to increase the size of the fan, my case exhaust fan is now a 120mm fan that not only has a larger surface area but it also moves a larger volume of air at lower revs thus reducing the noise.
hope this helps and i wouldnt worry as people have suggested above
regards
jason

As the power of computers increase, temperature can be a big problem. Most Pentium processors and AMD units have extra cooling systems for the processor as well as the inside of the case.

While most of the time, your fan seems to run at a low speed, there is circuitry to speed up the fan when sensors incate the temperature gets too hot. In fact, I found out my Dell has three speeds. In your Dell software, you should find a set of diagnostic programs (at least one). If you CAREFULLY run these, you can tell how the hardware is working (please don't run any test that WRITES to your hard disk or you can lose everything). Included is a FAN test that will run your fan at the different speeds.

Heavy graphic programs can cause your processor or video section to heat up. Eventually, you can match your activities to the sound of the fan and you will know what activities of yours will speed up the fan.

The only way around this would be to tinker with the "insides" of your computer to replace parts of the cooling system if you can find fans that would do the job but run quieter. I would find professional help in this area since the "penalty" for using the wrong fans can be destruction of parts of your computer system due to excessive heat. One option, if you really want a quiet machine, would be to install a water-cooled system. Once again, if you are not handy working with electronics and tools inside your computer, you can probably get the service department at the store to install it for a price.

By the way, some computers will have a readout that tells you the temperature inside the computer.
Howie

dont be shy turn that suckey off unplug take the side cover off and take long hose with a plastic end of the vacumn cleaner and blow all the fuzz out and the turn the hose on the other end and suck the other side in and reinstall the cover and make sure it is clean and free of the dust bunnies it will help and you will be sooooooooo happy and the fans and boards will too.

ok first off think of this dell heatsinks on the e510 is like a temp sensor ok
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on the bottem where its orange it needs to have thermal paste on it to contat the cpu
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ive had this prob for like a month an i fixed it
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all you do is take out the cpu put a thin layer of paste on it id say the size of 2 grans of rice
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next on th heatsink do the same but only where the cpu will sits
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put them together an it will be quiet
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to test it i played gta4 almost maxed out with a shirt in the btx intake case an with in 8 mins of playin it went to 100% fan load when i took it out it went back down an when i shut down the game to get to the cpu to idel the fan went back to a silent 800 rpm speed
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lastly DO NOT LEAVE CRACKS IN THE PASTE WHEN U PUT IT ALL BACK TOGETHER <3
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silent dell