Question Why is my custom fan curve not working on 4070?

[thefreshy]

I bought new Gigabyte 4070 OC and I had it on default fan curve. It sat at 35C idle with fan speed a t 56%. I figured 56% fan speed is a bit much when idling so I went and experimented with custom ones. But I'm not sure I'm getting it right or something isn't working as it should.

As you can see on the image. I have fan curve set at 30% fan speed until 55C then ramp it up. But as you can also see my fan speed is at 0% and temp is above 50C. Why aren't the fans spinning at 30% despite sitting on the minimum on the dotted line. Am I misunderstanding how fan curves work? What am I doing wrong here?

 

[thefreshy]

After testing, putting fan speed at 31% shows that they are running, but after I peak through the case I can see that fans are not spinning even if both MSI afterburner and HW64INFO are showing fan speed at 31%. Why is it doing this?

 

[Paperdoc]

You have set your minimum fan "speed " signal (really, supply Voltage) too low. Any 12 VDC fan runs full speed at 12 V, but has a minimum to keep running slowly. Often any signal below 5 VDC will allow the fan to stall. Once that happens, the only way to get it re-started is to raise that Voltage substantially to 7 or 8 V, then slow it down a little bit.

Try setting your MINIMUM fan speed level higher. Start at 40% and see if it will STAY running. If yes, experiment a little at lower values until you find out what causes it to stall. Then raise that min setting to something that never stalls.

 

[thefreshy]

You have set your minimum fan "speed " signal (really, supply Voltage) too low. Any 12 VDC fan runs full speed at 12 V, but has a minimum to keep running slowly. Often any signal below 5 VDC will allow the fan to stall. Once that happens, the only way to get it re-started is to raise that Voltage substantially to 7 or 8 V, then slow it down a little bit.

Try setting your MINIMUM fan speed level higher. Start at 40% and see if it will STAY running. If yes, experiment a little at lower values until you find out what causes it to stall. Then raise that min setting to something that never stalls.

I found out it only keeps spinning at 50%, while at 49% it keeps turning off and on. Im happy with 50% as my GPU stays 35C all the time.

 

[Paperdoc]

Good! Glad you've got it to work the way you want.