Case fans set to off

[GeorgeDirac]

Hello, I have 6 case fans installed, on Fractal Design Arc Midi R2 case, 3 of them are plugged in case fan controller, and rest of them into motherboard. I set last 3 set to OFF until CPU temp > 40°C. Because of that, they are off 50% of time but when I am gaming temps actually fluctuate around 40°C so fans turn on and turn off frequently, is that gonna degrade them in any way? fact that they have to turn on and off in short period of time.

BTW, 3 fans plugged in case fan controller are Noctua NF-A14 FLX, and in mobo, there is 1 Noctua NF-A14 FLX fan and 2 normal lower quality fans.

[N4dez]

what fan controller are you using? And how does it know it reached 40 degrees inside your case?
Does it have a temperature probe?

 

The turning on & off again will degrade them faster, every time the fans have to turn on again, it needs to gain it's momentum back. This is more load for the motor inside the fan.
Will it shorten the lifespan noticeably? I highly doubt it.

 

I don't know if your system supports this, but you could work with a delta, this mean that the fans turn on at for example 40 degrees and that they stay on until the temperature is 35 degrees.
This means you have a buffer and the fans are not going to switch on & off again so often.

[Arc_Jester]

It shouldn't degrade them in any noticeable way but if it bothers you then raise the On temp to about 45°C or set the fans to be on only until the PC cools to a certain temp and see if that helps.

[Arc_Jester]

-dbl post-

[GeorgeDirac]

what fan controller are you using? And how does it know it reached 40 degrees inside your case?

Does it have a temperature probe?

 

The turning on & off again will degrade them faster, every time the fans have to turn on again, it needs to gain it's momentum back. This is more load for the motor inside the fan.

Will it shorten the lifespan noticeably? I highly doubt it.

 

I don't know if your system supports this, but you could work with a delta, this mean that the fans turn on at for example 40 degrees and that they stay on until the temperature is 35 degrees.

This means you have a buffer and the fans are not going to switch on & off again so often.

Sorry that I didn't make it clear, fan controller only supports 3 modes, 5v, 7v, and 12v, it has no OFF setting, 3 fans that are hooked on motherboard are turning on and off according to temperature.

 

 

It shouldn't degrade them in any noticeable way but if it bothers you then raise the On temp to about 45°C or set the fans to be on only until the PC cools to a certain temp and see if that helps.

Yeah, I am gonna have to up the temperature limit.

 

By the way, is there any way link fan speed to GPU temperature? because 2 fans are blowing towards gpu, and I would like for them to be controlled by GPU.

[N4dez]

By the way, is there any way link fan speed to GPU temperature? because 2 fans are blowing towards gpu, and I would like for them to be controlled by GPU.

 

I don't think that's possible. If it is please someone correct me.

You could always try to hardwire the speed control wire to the gpu, and hook up the your psu to those fans.

So your GPU controls the speed . But everything would have to be PWM for this to work. Doing this might damage your card and almost certainly void warranty if not done properly.

Don't do this unless you know some basic electronics.

[Arc_Jester]

By the way, is there any way link fan speed to GPU temperature? because 2 fans are blowing towards gpu, and I would like for them to be controlled by GPU.

 

 

I don't think that's possible. If it is please someone correct me.

You could always try to hardwire the speed control wire to the gpu, and hook up the your psu to those fans.

So your GPU controls the speed . But everything would have to be PWM for this to work. Doing this might damage your card and almost certainly void warranty if not done properly.

Don't do this unless you know some basic electronics.

There is a way through a program called speedfan, it allows you to setup custom fan curves for each fan and you can also choose which temp(CPU,GPU) to use for each fan all from within windows. Here's speedfan http://www.almico.com/speedfan.php and a video tutorial of how to use it : 

[GeorgeDirac]

There is a way through a program called speedfan, it allows you to setup custom fan curves for each fan and you can also choose which temp(CPU,GPU) to use for each fan all from within windows. Here's speedfan http://www.almico.com/speedfan.php and a video tutorial of how to use it : 

After few hours, I configured it exactly how I wanted it, thank you very much!

 

One more question, when cpu/gpu aren't on load, I am running 3 fans on as low speed as they can run, which is around 390-500 RPM, is that ok?

[Arc_Jester]

After few hours, I configured it exactly how I wanted it, thank you very much!

 

One more question, when cpu/gpu aren't on load, I am running 3 fans on as low speed as they can run, which is around 390-500 RPM, is that ok?

As long as the temps are low and stable then there is no problem.