Fans CONSTANTLY ramping :(

[19eightysix]

I've tried playing with the fan curve in AI suite (don't get me started on this garbage program) but my fans are CONSTANTLY ramping and its bloody annoying. 

 

I've got 5 Coolermaster sickleflows currently, 2 intake 3 exhaust. I've done the AI suite setup for them, I've played with the fans curves I'm all out of ideas aside from just going external fan controller. Figured I'd ask before spending more money from the watercooling fund.

[WoodenMarker]

Are they ramping up alongside your temps or randomly?

[CostcoSamples]

First, are those PWM fans? Second, are you using the BIOS fan profiles?  It works really well on my Asus motherboard using Noctua PWM fans.

[Moonzy]

what's the fan curve like? is it steep at where your processor's temps fluctuates at?

whats the spin up and down delay?

[Hunched]

Don't SickleFlows like stay at 2000rpm constantly -/+ a bit?

[19eightysix]

almost seems random they ramp up during gaming as expected but once i stop gaming i have to open ai suite and turn the fans to silent mode several times before they will shut down

[19eightysix]

fan curve is 40 to 60 degrees its at 600-800 rpm then at 70 its boosts to 2000rpm

 

they are 3 pin fans

[Hunched]

You're probably forcing them to do something they aren't supposed to do.

Looking at Cooler Master's site SickleFlow fans have either a fixed RPM or a -/+ 10% off of labeled RPM.

 

They're like shitty LED transparent $10 fans dude....

[Moonzy]

3 minutes ago, 19eightysix said:

almost seems random they ramp up during gaming as expected but once i stop gaming i have to open ai suite and turn the fans to silent mode several times before they will shut down

maybe your fan curve is too steep near the place where your temps fluctuate while gaming?

try ramping up the fans in an exponential curve like so

Spoiler

and not a steep curve like so

Spoiler

 

[CostcoSamples]

See if you can control fan profiles in the BIOS.  Should work much better.

[Moonzy]

2 minutes ago, 19eightysix said:

fan curve is 40 to 60 degrees its at 600-800 rpm then at 70 its boosts to 2000rpm

 

they are 3 pin fans

did you set the fan header that the fans are connected to to DC control in the bios instead of pwm control?

[19eightysix]

1 minute ago, Moonzy said:

did you set the fan header that the fans are connected to to DC control in the bios instead of pwm control?

I will check that

[CostcoSamples]

You could also look at getting in line resistors for your fans.  Noctua calls them "low noise adapters" but I think other companies make them as well.  The idea is it restricts your fan's maximum speed.  

[19eightysix]

2 minutes ago, CostcoSamples said:

You could also look at getting in line resistors for your fans.  Noctua calls them "low noise adapters" but I think other companies make them as well.  The idea is it restricts your fan's maximum speed.  

i was under the impression that the whole point of ai suite was to do that for you?

[CostcoSamples]

1 minute ago, 19eightysix said:

i was under the impression that the whole point of ai suite was to do that for you?

Well sure, but if software isn't working sometimes you need a hardware solution.  Should be cheaper than an external fan controller anyway.