Overheating and High Voltage in BIOS — Helios Neo 16 (PHN16-71), BIOS v1.18ф.

bohdanfursa2006
bohdanfursa2006 Member Posts: 2 New User

Hello,

I’m experiencing a consistent overheating issue with my Predator Helios Neo 16 (PHN16-71), equipped with an Intel Core i9-13900HX and BIOS version v1.18.

The issue appears immediately after startup and is especially noticeable in the BIOS. The CPU frequency ramps up to 4800–5100 MHz with voltages between 1.30–1.40V while idle, and CPU package temperatures quickly reach 77–90°C. The fans do not ramp up proportionally, and sometimes stay relatively quiet.

In Windows, idle temperatures fluctuate between 65–70°C, with short spikes up to 90°C under light loads. This behavior was not present when I first started using the laptop. When I was in another location with better electrical stability, the BIOS temperature never exceeded 60°C, which suggests this is not a hardware issue, but possibly EC firmware or BIOS logic related.

What I have tried:

  • Resetting BIOS to default settings
  • Setting Windows power plan to limit max CPU usage to 99%
  • Reinstalling Windows and all drivers from Acer’s official support page
  • Monitoring the system using HWMonitor, AIDA64, and PredatorSense
  • Testing both with and without PredatorSense installed

My concern:

This problem began after some time of usage and seems to have been triggered or worsened after updating to BIOS v1.18. The CPU behaves as if it is permanently in turbo mode. The behavior normalizes only after a few minutes or remains unstable depending on the power source.

Request:

  • Is there a known issue with BIOS v1.18 for PHN16-71?
  • Is there a way to control PL1/PL2 (power limits) in BIOS or PredatorSense?
  • Can a firmware or EC controller update be provided to address this?

I can provide HWMonitor logs, screenshots, and video recordings of the BIOS behavior on request.

Thank you.

Answers

  • Puraw
    Puraw ACE, Member Posts: 17,008 Trailblazer

    Hi, did you upgrade Windows11 to version 24H2 and installed PredatorSense from the Microsoft Store? Try that.

  • StevenGen
    StevenGen ACE Posts: 14,350 Trailblazer
    edited June 1

    Your Predator Neo model PHN16-71 (which I also have the PHN16-71-50JG model with the i5-13500HX model cpu) and by updating to the version 1.18 has the included bios version 1.10 that has the cpu microcode fix version 0x35 for the Intel 13th Gen cpu instability problems which your i9-13900HX cpu should also have.

    Be aware that your i9-13900HX cpu high temps only run momentarily and its cpu/gpu fans cool these components down to the cpu designed temp which could reach the max deigned temp of 110°C as this is an allowable and safe monetary temps that these cpu's are designed for.

    What I've found out on my PHN16-71-50JG / i5-13500HX / RTX4050 model with the oem 16GB total DDR5-4800MT/s CL40 ram is that by upgrading the ram capacity to 64GB 2x 32GB DDR5-4800MT/s CL40, see Crucial ram upgrade guide, I used their 64GB kit DDR54800MT/s CL40 type ram which is what I upgraded my PHN16-71 to (btw, your i9-13900HX cpu can run DDR5-5600MT/s CL46 type ram) also be aware that these laptops have also been update to even 96GB and their max capacity of 128GB ram capacities and they work, so 64GB is not the lowest ram that these laptops can run at! As increasing the ram on my laptop, has stopped my laptop from overworking as it runs allot cooler with the extra ram that stops this laptop from overprocessing its cpu and creating heat, so consider this upgrade also.

    The below Predator Sense temps are from my laptop running for about 4 hours doing normal tasks as an example for you. Btw I only run this laptop on its NVidia gpu and not the Intel cpu graphics, so consider doing that also as this makes the laptop run cooler also..

    image.png

    This is also after 4 hours the my 1TB boot drive with the Samsung 990 Pro + Heatsink M.2 SSD drive temp

    image.png

    Also consider upgrading to a faster and quicker Gen 4 x4 lane M.2 SSD with a heatsink, so that the boot drive runs cooler, as that is what I also did by upgrading to the Samsung 990 Pro NVMe + Heatsink which fits to this laptop and you can close the back lid, which also reduces this laptop from overworking and to make it run cooler. Try all these updates as its working for my laptop and this laptop runs allot cooler for me to what it did with the oem 16GB ram on my PHN16-71-50JG model laptop with the i5-13500HX / RTX4050. Good luck and hope all this helps you out further.

    For your information, the below tables are the Acer service guide tested PHN16-71 cpu and gpu temps in its minimum and maximum test environments, so expect the below temps and what your cpu temps is designed for, as these temps are safe to run without damaging the cpu or gpu.

    image.png image.png

    If this answers your question and solved your query please "Click on Yes" or "Click on Like" if you find my answer useful👍