Can't Control PWM Fans, checked out threads

[winnrocks]

Hi! I've looked around and tried a few solutions on the site but none quite match my problem.

I have a Z370 AORUS Ultra Gaming (rev. 1.0) and have been trying to get my fans to spin based off the temperature, as one does with PWM fans. I have Couger Vortex 120mm PWM fans and a S340 Elite case. Originally, I took all the NZXT fans out since they were 3 pin, and put my Couger fans in, plugged into the Sys Fan headers 1,2A, and 2B. However, they refuse to vary speed based off of temperature. The only fan that changes speed is the CPU fan which is plugged into CPU Fan.

I've tried using Speedfan, but it does not detect my motherboard at all. I know the fans work and am pretty sure the motherboard can control the fans because if I go into the BIOS and use Smart Fan 5 I can change them to "maximum" and they definitely speed up. I'm not sure if they can be controlled to follow the curve that is set however. The fan settings are set to PWM controlled instead of voltage.

Any solutions to how I can fix this are appreciated, I am looking to avoid an external fan controller. If it comes to that, is it possible to get a fan controller that can sit in my case and use the temperatures to detect the speed changes necessary without me needing to do it automatically?

Thank you!

 

[DRagor]

When in Smart Fan 5 settings, which temp sensor you set for those fans? Some of the temp sensors on those boards are put in such places that they rarely see any temp changes, and if the fan speed would be set to follow such sensor it would hardly change its speed at all.

 

[Karadjgne]

You can use SpeedFan anyways, it doesn't need to 'detect' your mobo.

On the app you'll see a list of fans. Manually adjust the fans to determine exactly what name belongs to what fan. Top right is settings. Under the settings are 2 tabs for the fans. If you click on a fan name on the second tab, and halfway down you'll see where you can manually change it. That's where you'll setup the fan curve. If you look, there's an address associated with that fan, it's usually an ISA buss address. That's what you need to change. You can pick the cpu, gpu, any of ½dozen system sensors.

The only thing 'detection' does is link that motherboard to a prior users settings after they sent one to SpeedFan author, which is going to be different than you since you have a different case, different gpu, different basically everything.

Yes, SpeedFan is excellent at fan controls, but yes, it's a royal pain in the ash to get going if you've never used it before.

And yes, you'll need to set it up as a Windows Task, it's the only way to bypass the UAC otherwise you'll be forever agreeing to let it run at boot.

When setting fan curves, understand that case temps and cpu temps are vastly different, most cases average @32°C to 40°C at most, so your curve will be very tight, mine is set for 34 min rpm and 38 is max rpm, not the standard 30-70°C range of cpus.

 

[winnrocks]

When in Smart Fan 5 settings, which temp sensor you set for those fans? Some of the temp sensors on those boards are put in such places that they rarely see any temp changes, and if the fan speed would be set to follow such sensor it would hardly change its speed at all.

I tried all the temperature sensors in Smart Fan and none changed it. Also, in speedfan, the problem is my fans aren't detected at all. I watched a few guides but all of them assumed your fans were already showing up.

 

[DRagor]

I tried all the temperature sensors in Smart Fan and none changed it. Also, in speedfan, the problem is my fans aren't detected at all. I watched a few guides but all of them assumed your fans were already showing up.

Ok, how about using Gigabyte utility (I know it's garbage but ...)? Install Gigabyte App Center, then SIV. In SIV you can set it to show all temps and fan speeds in separate window. Then fire a game or benchmark and watch if the fan speeds change.

 

[winnrocks]

I tried all the temperature sensors in Smart Fan and none changed it. Also, in speedfan, the problem is my fans aren't detected at all. I watched a few guides but all of them assumed your fans were already showing up.

Ok, how about using Gigabyte utility (I know it's garbage but ...)? Install Gigabyte App Center, then SIV. In SIV you can set it to show all temps and fan speeds in separate window. Then fire a game or benchmark and watch if the fan speeds change.

Sorry for the late reply, I was out all day. I was able to control the speeds through the utility app, but once I opened a game they acted normally and were once more uncontrollable. It appears I have some control over them, to make them "max" or slower but can't get them to change based off the temperatures.

 

[DRagor]

So it looks like the fans work all right, just they do on their own terms and don't want to play by your rules. Don't really have any more advice for you at this point.

 

[ameyer75]

I'm using the Aorus AX370 Gaming K7 in the NZXT H700i and have encountered the same issue. The case fans just want to do their own thing, even plugged straight into the motherboard. I know they've been releasing BIOS updates, so you could try updating and playing with it again in Smart Fan 5. Best of luck!

 

[winnrocks]

I'll try giving the BIOS an update and see if that works. If not, I'll get an extra fan controller instead. Thanks!