Adjusting my Fans?

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ChrisOrange

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Aug 25, 2014
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Hey people,

I would like to know your opinions on the matter. I have Fans that aren't running on their normal speeds.

I have 2 Case Fans that should run at 1800 rpm, but they run at a steady 1920ish rpm by default.
I don't know whether this is any problem at all, since they only run slightly higher than they should run at. I have another Fan that isn't connected with my Motherboard so i can't see its statistics, but should also run at 1800 rpm.

I have a bigger Case Fan that should run at 1500 rpm, but runs at 600ish rmp.

And finally my CPU Fan which should run at around 300 - 1500 rpm and is currently running at about 700ish rpm.

All Fans (except for the one that's not connected to my Motherboard) are set at Normal mode in Bios. This stands for "Allows all Fans to run at different speeds according to the CPU and system temperatures.

I'm afraid my Fans (certainly my CPU Fan) might run at speeds they aren't intended for (might my PC reach certain high tempertures). What do you think i should do, adjust my rpm settings or keep the statistics as they are right now?

Thanks in advance for any reply given.
 
Solution
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By default, most mobo fan ports enable automatic fan speed control. This means they have pre-programmed certain target temperatures for specific components - usually the interior of the CPU (it has its own temp sensor inside), the interior of the northbridge chip, and maybe another temp sensor on the mobo. They are SUPPOSED to run your fans at less than full speed when your system is not working hard, and then speed up if the measured temperatures start to rise. In other words, you WANT them not at full speed for two reasons: under "normal" circumstances this reduces fan noise; and, when system load rises you want to be sure there is additional fan capacity to increase cooling.

As long as your CPU cooling fan is plugged into the mobo's...
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Paperdoc

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By default, most mobo fan ports enable automatic fan speed control. This means they have pre-programmed certain target temperatures for specific components - usually the interior of the CPU (it has its own temp sensor inside), the interior of the northbridge chip, and maybe another temp sensor on the mobo. They are SUPPOSED to run your fans at less than full speed when your system is not working hard, and then speed up if the measured temperatures start to rise. In other words, you WANT them not at full speed for two reasons: under "normal" circumstances this reduces fan noise; and, when system load rises you want to be sure there is additional fan capacity to increase cooling.

As long as your CPU cooling fan is plugged into the mobo's CPU_FAN port (to be sure that fan responds to the CPU's measured temp), your system is working as it should.

If you prefer to use max cooling at all times and don't mind the higher noise result, you can go into BIOS Setup and change the fans to fixed speed settings (maybe full speed) rather than auto.

A third-party fan controller will allow you to set fixed fan speeds yourself easily and change them, but will NOT do any automatic control for you.
 
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