Acer Nitro 5 CPU fan is capped at 4,700 RPM, causes thermal throttling and performance drop in games

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Devesh_Tripathi
Devesh_Tripathi Member Posts: 2 New User
edited July 2 in Nitro Gaming

My Acer Nitro 5’s CPU fan is capped at around 4,700 RPM, even under heavy workloads like CineBench the speed remains same, which leads to thermal throttling and game performance drops

Best Answer

  • Puraw
    Puraw ACE, Member Posts: 17,657 Trailblazer
    Answer ✓

    What you Can Try

    • Open Quick Access or AcerSense (whichever is installed) → Switch to Performance Mode and reboot
    • Then re-check NitroSense → Toggle CoolBoost off and on again for good measure
    • Run Cinebench or a GPU stress test, monitor with HWiNFO → See if RPM now exceeds 4700 during thermal ramp-up

    How Fan Control Works (Simplified)

    Layer

    Effect on Fan Curve

    Overrides What?

    Windows Power Mode

    Base-level power & thermal behavior

    Can affect NitroSense indirectly

    Acer Quick Access / AcerSense Mode

    Direct override of cooling modes (Silent, Normal, Performance)

    Can ignore NitroSense CoolBoost

    NitroSense

    Exposes manual fan control & CoolBoost

    Only effective if no higher override

    EC Firmware Curve

    Low-level default behavior (BIOS-level)

    Always active unless overwritten

Answers

  • Puraw
    Puraw ACE, Member Posts: 17,657 Trailblazer
    Answer ✓

    What you Can Try

    • Open Quick Access or AcerSense (whichever is installed) → Switch to Performance Mode and reboot
    • Then re-check NitroSense → Toggle CoolBoost off and on again for good measure
    • Run Cinebench or a GPU stress test, monitor with HWiNFO → See if RPM now exceeds 4700 during thermal ramp-up

    How Fan Control Works (Simplified)

    Layer

    Effect on Fan Curve

    Overrides What?

    Windows Power Mode

    Base-level power & thermal behavior

    Can affect NitroSense indirectly

    Acer Quick Access / AcerSense Mode

    Direct override of cooling modes (Silent, Normal, Performance)

    Can ignore NitroSense CoolBoost

    NitroSense

    Exposes manual fan control & CoolBoost

    Only effective if no higher override

    EC Firmware Curve

    Low-level default behavior (BIOS-level)

    Always active unless overwritten

  • Devesh_Tripathi
    Devesh_Tripathi Member Posts: 2 New User

    The speed after following the steps is still same i.e. 4700

  • Axxo
    Axxo Member, Ally Posts: 2,060

    The Acer Nitro 5 CPU fan speed being capped at 4,700 RPM may indicate a thermal issue, but it can also be normal in some cases. If the fan speed is consistently capped at 4700 RPM, even when the system is under heavy load and the temperature is high, it could indicate a problem with the fan, temperature sensors, or fan control software.
    Here's a breakdown of potential causes and solutions:-

    Possible Causes:
    Thermal Throttling:
    The fan speed may be limited to prevent overheating, especially if the system is under heavy load.
    Fan Failure:
    The fan itself may be malfunctioning or reaching its maximum speed.
    Software Issues:
    Problems with the fan control software (like NitroSense) or BIOS settings could be affecting fan behavior.
    Hardware Limitations:
    The specific model or configuration of the Acer Nitro 5 may have a default fan speed limit.
    CoolBoost or Performance Mode:
    Using these modes in NitroSense can sometimes cause the fan to run at a higher, but potentially capped, speed.

    Troubleshooting Steps:
    1. Check Fan Speed and Temperatures:
    Use HWiNFO or similar monitoring software to confirm the fan speed and see if it is consistently at 4700 RPM. Also, monitor CPU and GPU temperatures to see if they are excessively high.
    2. Clean the Fans:
    Dust accumulation can restrict airflow and cause the fans to work harder. Clean the fans and vents to improve airflow.
    3. Check Fan Control Software:
    Ensure that the fan control software (NitroSense or AcerSense) is properly configured. Try toggling CoolBoost off and on again, or switching between performance modes to see if it affects the fan speed.
    4. Update BIOS and Drivers:
    Ensure that the BIOS and relevant drivers are up to date. Sometimes, updates can address fan control issues.
    5. Consider Professional Help:
    If the problem persists, consider contacting Acer support or taking the laptop to a qualified technician for further diagnosis and repair.

    Important Notes:
    Normal Temperatures:
    In general, CPU temperatures up to 80°C under load and around 50-55°C at idle are considered normal for laptops.
    Gaming Performance:
    If you are experiencing performance drops while gaming due to high temperatures, it's worth investigating.
    Fan Lubrication: In some cases, fan lubrication can be a factor, and a technician may need to address this.
    Overheating, and then CPU fan at 0 rpm

    By following these steps, you can determine if the 4700 RPM fan speed is normal for your Acer Nitro 5 and take appropriate action if necessary.
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