How to control CPU fan?

myutopia · Post by **myutopia** » Sat Aug 29, 2009 7:29 am

Hi all

Does anyone know how to use PureBasic to take control of the CPU's fan? I want to be able to leave it running at full speed, for example.

Thanks!

blueznl · Post by **blueznl** » Sat Aug 29, 2009 3:48 pm

That's very low level stuff, and depends on the hardware you're using. There's no generic 'slow down the fan' code possible, sorry.

talisman · Post by **talisman** » Sat Aug 29, 2009 9:06 pm

Leave fan speeds as is. This is something the user should take care of, not a software application.

maw · Post by **maw** » Sat Aug 29, 2009 9:53 pm

talisman wrote:Leave fan speeds as is. This is something the user should take care of, not a software application.

What? Application control is the best way to handle fan speed! Like Speedfan for example: http://www.almico.com/speedfan.php , so that depending on the load and temperature of the cpu/gpu/hdd an so on you can set the fans to different speeds.

talisman · Post by **talisman** » Sun Aug 30, 2009 12:21 am

maw wrote:
talisman wrote:Leave fan speeds as is. This is something the user should take care of, not a software application.

What? Application control is the best way to handle fan speed! Like Speedfan for example: http://www.almico.com/speedfan.php , so that depending on the load and temperature of the cpu/gpu/hdd an so on you can set the fans to different speeds.

Maybe I phrased my sentence just wrong. I did want to exclude SpeedFan from the list, since it actually is a useful application. However, what I meant was that controlling fan speeds without the intent of building a SpeedFan-like application is definitely a NO. Anyway, you guys do know how much effort and time was put to SpeedFan to make it the SpeedFan we know and love*? Still, SpeedFan does not support everything and it'll continue to be like that till the bitter end.

* Except Linux users, long live lm_sensors!

Trond · Post by **Trond** » Sun Aug 30, 2009 10:58 am

maw wrote:
talisman wrote:Leave fan speeds as is. This is something the user should take care of, not a software application.

What? Application control is the best way to handle fan speed! Like Speedfan for example: http://www.almico.com/speedfan.php , so that depending on the load and temperature of the cpu/gpu/hdd an so on you can set the fans to different speeds.

That's what already happens automatically. If it doesn't happen with your fans it probably means that your computer is full of dust or that the fan doesn't support multiple speeds.

maw · Post by **maw** » Sun Aug 30, 2009 11:12 am

talisman wrote:Maybe I phrased my sentence just wrong. I did want to exclude SpeedFan from the list, since it actually is a useful application. However, what I meant was that controlling fan speeds without the intent of building a SpeedFan-like application is definitely a NO. Anyway, you guys do know how much effort and time was put to SpeedFan to make it the SpeedFan we know and love*? Still, SpeedFan does not support everything and it'll continue to be like that till the bitter end.

* Except Linux users, long live lm_sensors!

Ok, then we are on the same page

Quite right. And yes, I do know how much time and effort Alfredo has put into Speedfan, been using it since the very first beta! I fear the day he will get bored with it...

maw · Post by **maw** » Sun Aug 30, 2009 11:28 am

Trond wrote:That's what already happens automatically. If it doesn't happen with your fans it probably means that your computer is full of dust or that the fan doesn't support multiple speeds.

While the built in fan regulation that most motherboards have these days is better than none, it doesn't even come close to Speedfan. I have my fans running at around 400rpm, just above the speed where they will start at all, and I can't hear whether my computer is on or not. And it's still really cool. Only when I'm gaming does Speedfan speed up the fans, and then very seldom above 1000rpm even though I'm running a quadcore.

Without Speedfan they run at around 800rpm when idle and at their max 1400rpm when gaming. So I get much more noise without getting more than one or two degrees lower temperature.

myutopia · Post by **myutopia** » Sun Aug 30, 2009 12:05 pm

Thanks y'all for your replies. I'll check SpeedFan out.