2070 super conflicting with Afterburner?

[razor_]

Hello!

 

I recently bought Gigabyte 2070 Super Gaming OC and when trying to set up a custom fan curve I've got some strange behaviour happening where fans won't spin properly if I try to set them to a lower constant speed. 

Example:

Having fan speed set to 20% starting at 50C the fans will be turning on and back off every second. This seems to stabilize (keeps them turning) at say 33% fan speed - then if I lower the speed back down to say 22% it will keep them spinning there just fine, but a quick custom fan curve disable/enable we're back to the constant revving.

 

Is it Afterburner conflicting with something? I installed the last version of it when I got the card. I did not have any issues whatsoever on my previous gpu (RX 480).

Also the default Gigabyte's curve works just fine, no revving.

 

Any ideas?

[SkilledRebuilds]

Normal, my 1070 does this revving under 30% and I can hear the pulse of it trying to spin faster under this lowspin moment...

They set (All cards different)

 

If I use 28% or less, I see my fans do the same, spin but slowdown and respond stronger for a pulse... creates a tick sound from the GPU I originally thought was my HDD.

 

Set GPU to 30%, complete silence... always spinning, no slowdown and pulse/tick sounds.

It's just the values they set for the curve and the fan behaviour.

 

Set the minimum to the value it stops.

Or full auto I guess..

 

 

[razor_]

Okay, that might explain the behaviour but it does beg the question: why am I then able to get it to stay at 20% sometimes until I restart the computer/afterburner or simple turn off/on custom curve? 

 

If 30% is truly factory set lowest stable RPM that's by all means ridiculous.. unless they are covering for some design flaws that way I guess.