Acer Predator Helios Neo 16AI PHN16-73 High CPU usage and temperatures.

Question

Hello,

I’ve been using an Acer Predator Helios Neo 16AI PHN16-73 with an Intel Core Ultra 9 275HX processor and an NVIDIA GeForce RTX 5070 Ti graphics card since February 2026. Even when the computer is idle, the CPU temperature rises above 80 degrees, and the fans are running at high speed. Under load, the maximum temperature reaches 105 degrees, and the fans are running at full speed. To prevent this, I want to try solutions like lowering the voltage or reducing power limits using the Intel XTU software, but the BIOS settings are preventing me from doing so. When I disable the overclocking lock, Windows won’t boot, and I can’t use my computer. Is there another solution to this overheating and fan issue, or is there a way to enable the overclocking lock?

Murav · Answer

Hello @eraykl10,

The high idle temperatures (80°C+) and extreme load temperatures (105°C) you are experiencing with your Acer Predator Helios Neo 16AI PHN16-73 are not normal, even for a high-performance Intel Core Ultra 9 275HX processor.

While BIOS restrictions on your specific model often block traditional undervolting via Intel XTU, there are several alternative methods to manage these thermals without causing Windows boot failures.

Immediate Software Workarounds:

If you cannot undervolt due to the BIOS "Overclocking Lock," you can still significantly reduce heat by limiting the CPU's aggressive boosting behavior:

* Disable Processor Performance Boost Mode: 
* This is often the most effective way to drop temperatures by 15–20°C with minimal impact on real-world gaming performance.* Go to Control Panel > Power Options > Change plan settings > Change advanced power settings.
* Expand Processor power management > Processor performance boost mode.
* Change "Plugged in" to Disabled or Efficient Aggressive.

* Limit Maximum Processor State: Set the Maximum processor state to 99% instead of 100% in the same Power Options menu.
* This prevents the CPU from entering its highest turbo clocks, which are responsible for the most extreme heat spikes.
* PredatorSense Fan Control: Ensure your PredatorSense app is set to Balanced or Quiet for idle tasks and use Turbo or Max only when necessary for gaming, as this can drop temps by several degrees.

Unlocking BIOS & Undervolting:

The Windows boot issue you encountered after disabling the Overclocking Lock is likely due to a conflict with Virtualization-Based Security (VBS) or Memory Integrity.

* To potentially fix the boot issue: Before disabling the lock in BIOS, try turning off Core Isolation (Memory Integrity) in Windows Security and disabling the Virtual Machine Platform in "Turn Windows features on or off".

ThrottleStop Alternative: Even if Intel XTU is restricted, ThrottleStop (version 9.7+) sometimes allows you to adjust Power Limits (PL1/PL2) directly, even if core voltage is locked. Reducing these (e.g., to 65W or 75W) will cap the heat output during heavy load.

Hardware & Maintenance:

Since your laptop is relatively new (February 2026), these extreme temperatures might also indicate a physical assembly issue:

* Liquid Metal Shifting: Many high-end Predator models use liquid metal. Users have reported that if the liquid metal shifts away from the center of the CPU, it causes massive heat spikes.
* Dust & Airflow: Ensure the intake vents on the bottom are clear. Elevating the rear of the laptop by just an inch can significantly improve airflow and reduce temps.

For a permanent solution, have you checked if there are any official BIOS or firmware updates available on the Acer Support Site that specifically address thermal management for the PHN16-73?

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GAMING6698 · Answer

You have to follow step 5 of below guide and do cleaning and repasting to fix this:

https://community.acer.com/en/discussion/724763/ultimate-laptop-cooling-optimization--guide.

Do it like mentioned. For CPU/GPU use PTM7950, if not available then use Arctic MX-6. For thermal pads/putty replacement, if needed, get good thermal putty as well. Proper way of application is shown in the guide.

Diya1811 · Answer

@eraykl10

You can do by searching for "Edit power plan" in Windows, navigating to "Change advanced power settings," and expanding the "Processor power management" section. By setting the "Maximum processor state" to 99% for both battery and plugged-in modes, you effectively disable the aggressive Turbo Boost feature, which often results in an immediate and significant drop in temperature during both idle and high-load tasks.

Another reliable method is to use the PredatorSense application to manually override the automatic fan behavior. Instead of letting the system decide when to ramp up the cooling, you can set the fan control to "Max" before starting a demanding task to ensure heat is exhausted as quickly as possible. You should also ensure that your Operating Mode is set to "Quiet" or "Balanced" when you aren't gaming, as the "Turbo" and "Predator" modes apply higher voltages that contribute to the 80-degree idle temperatures you are seeing.

Physical optimization is equally important and carries no risk to your operating system or internal components. Simply elevating the rear of your laptop by an inch with a cooling pad or a solid object can significantly improve the airflow into the intake vents located on the bottom. It is also vital to only use the device on hard, flat surfaces, as soft materials like blankets or carpets will block the fans and cause the CPU to hit the 105-degree thermal limit almost instantly.

since your device is still very new and under warranty, you should consider contacting Acer Support.

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