Asrock Challenger B580 weird fan speed even @idle, fan keeps turning on and off and can't stop compl

[mrB580]

I don't know but this feels like a bug to me, hopefully driver update can fix this as it's annoying AF!

The fan would only stop for 2-3 seconds after reaching the temp for "0" RPM. It constantly goes on and off at idle and I feel like this is not good for the fan/bearing.

Is someone experiencing the same? if so, any help or tips will be greatly appreciated.

[VonM_Intel]

Hi, mrB580.

Thank you for posting in our Community and sharing your experience with the Asrock Challenger B580 fan behavior. This type of behavior could indeed be tied to a firmware or driver-level control issue, or possibly a fan curve configuration anomaly. To better assist in narrowing down the cause and identifying potential workarounds, may I ask you to confirm the following:

• What temperatures are you seeing when the fan ramps up at idle?
• Are you using the default fan curve settings, or have you made any custom adjustments?
• Does the issue persist in both balanced and performance power profiles in Windows?
• If you have done any other tests, please let me know the details so we don't cover the same ground twice.

Additionally, I'd like to delve deeper and verify specifics like the graphics models, precise driver versions, and any system errors. Utilizing the Intel SSU tool will enable me to collect detailed information about your system setup, which could aid in identifying the underlying cause of this issue. For your privacy and security, I have already sent you an email to collect the SSU reports. Once I receive the logs, I can investigate further and provide better assistance.

Have a nice day!

Best regards,

Von M.

Intel Customer Support Technician

[mrB580]

What temperatures are you seeing when the fan ramps up at idle? Most of time @48-50 degrees. For example you set the curve @70 degrees to stop spinning.  Once it reaches  48-50 degrees the fan would start to act weird, it would spin and stop constantly until your on heavy load again and the fan would spin normally.

Are you using the default fan curve settings, or have you made any custom adjustments? I've tried using both, but it still the same

Does the issue persist in both balanced and performance power profiles in Windows? Tried both still the same

If you have done any other tests, please let me know the details so we don't cover the same ground twice.

[mrB580]

Additionally kindly refer to the video attached for a clearer view of what's going on, hoping that this is not a hardware issue.

[VonM_Intel]

Hello, mrB580.

Thank you for the detailed information and for sharing the video. The behavior you're seeing is likely caused by an overly narrow temperature buffer between idle temps (~48–50°C) and the 0 RPM threshold set at 70°C. When the fan curve is configured to remain off until 70°C, but the actual temperature hovers just below that point, the fan may engage briefly in response to transient spikes, then stop again, creating the constant on/off cycling you're experiencing. This is not ideal and can lead to mechanical stress over time. 

Since you’ve already tested both default and custom fan curves, as well as different Windows power profiles, the next steps would be a thorough investigation. I’ll need to conduct additional research on this issue and will post an update in this thread once I have more information about this matter.

Best regards,

Von M.

Intel Customer Support Technician

[mrB580]

Okay so apparently a DDU safe mode almost did the trick. My auto curve now stops the fan @idle, now it works normal. But.... on Custom fan curve the issue is still the same......

[Ernesto_C_Intel1]

Hi @mrB580,

Thank you for taking the time to share your insights after conducting a clean installation of the graphics driver using DDU. Your feedback is invaluable to us as we strive to enhance our products and services.

I want to assure you that I'm currently investigating the issue with the fan curve that you have reported and I will provide you with an update as soon as possible.

Thank you for your patience and understanding.

Regards, 

Ernesto C. 

Intel Customer Support Engineer

[VonM_Intel]

Hello, mrB580.

Thank you for your valuable feedback regarding the custom fan curve behavior on your Intel hardware. Please be assured that we are actively working to recreate the issue on our end to better understand and investigate the behavior you've described. To assist us in accurately replicating the scenario, could you kindly share the exact settings you used when configuring the custom fan curve? This information will be instrumental in helping us move forward with our analysis.

Best regards,

Von M.

Intel Customer Support Technician

[mrB580]

Hi

see attached video for your reference.

PS w/ 72 degrees temp limit.

[VonM_Intel]

Hello, mrB580.

Thank you for sharing the video. I've noted the reference to the 72°C temperature limit. I'll review the footage and do further research on this matter. I will post the response on this thread once available.

Best regards,

Von M.

Intel Customer Support Technician