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Undervolting problems with Helios 300

Gobekli5Gobekli5 Posts: 2Member New User

I have decided to undervolt my predator since I am reaching very high temperatures while gaming even after having my cpu repasted. Before the repaste, I was reaching temps. up to 99 Celsius and I would stay in between 90 and 99 with games such as Sea of Thieves. I'd still go up to 97 after the repaste and it was still bad because at 97 I beginning to lose performance because of the temperature.
Anyways I have the PH315-51 model, i7-8750H, GTX 1060 6 gb.

I  undervolted using the Intel Extreme Tunning Tool. I started out with a -0.120 mV on the cpu and the cpu cache. But I was still getting high temperatures and it was stable so I pushed it down to -0.140 mV. At this point it was alright, I was getting between 75 and 85, sometimes spike up to 95 Celsius (playing "Sea of Thieves" if you do not know this is a cpu intensive video game). I decided to go further and I went to -0.160 mV, I got a blue screen within the first 10 minutes of playing so I reverted the changes and went to -0.145 mV (this is still cpu and cpu cache, I did not change anything else). At -0.145 mV I played Sea of Thieves for about 3 hours straight, temperatures were good, I did not go over 90, I stayed in the 75-80 Celsius range most of the time, it would go up to 85 and I had one spike to 90 but that was for a couple of seconds. Anyways I finish playing my game, and after about 30 minutes of practically doing nothing on my computer, I get a sudden a blue screen. I do not know what to make out of this, I am pretty sure it was due to the undervolting but how can  I get that blue screen when am not doing anything and I didn't get it when my processor was actually working?  I am not sure what to do here, I was thinking about using -0.140 mV and see how that goes, but if anyone has any additional information or insight, I really appreciate it. Thank You. 

* I have all my software up to date and drivers. 


  • sri369sri369 Posts: 1,617Member Community Aficionado
    Your guess is correct - the blue screen here is due to excessive under volting. Try setting this value to 130 and you should be safe.
    Try getting an external USB fan to reduce temps.
    You could even try undervolting GPU using MSI afterburner to help reduce temps a little more.
    LIKE - if helpful
    ACCEPT - if helped resolve
    I am not an Acer employee.
    Your issue could get better coverage and more answers if posted in forums than in a message to me.

    User benchmark: https://www.userbenchmark.com/UserRun/10977437

  • Gobekli5Gobekli5 Posts: 2Member New User
    edited February 16
    sri369 Thank You for the comment. I got an external USB fan and I did undervolted to 130 and within 30 minutes of playing a video game my cpu was in between 90 Celsius and 98, and I was getting almost constant thermal throttling. I noticed the high temps because I was quite literally burning my fingers every time I'd press the awsd keys. To solve the issue I went into power settings,  processor power management, maximum processor state and I changed the values to 99% as opposed to 100%. This allowed me to get temperatures no more than 75 Celsius. I did lose performance but the temperatures are not high anymore. In addition, my graphics card doesn't heat up as much and I rarely use the overclocking option on Predator sense for it. The processor was pasted with good thermal paste and thermal pads were changed as well (before I made the initial post). 
  • ven98ven98 Posts: 4,046ACE Pathfinder
    What thermal paste did you use?

    You might have not applied the thermal paste correctly.
    Always post the following characterisitcs of the device:
    -Model number
    -Part number(not required, but helpful)
    -Operating system

    Helios 300 and Nitro 5 users DO NOT update the BIOS to version 1.22 if you don't want the keyboard's backlight to turn off after 30 seconds even when the device is plugged in.

    Hit 'Like' if you find the answer helpful!   
    Click on 'Yes' if the comment answers your question!

  • xapimxapim Posts: 2,878ACE Pathfinder
    edited February 16
    Also i don't recommend using XTU its not stable revert it back to defaults uninstall it and use TS instead and as also @ven98 said u might have a bad repaste i also recommend kryonaut or similar if you didn't used it yet


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    If my answer fixed you issue please accept it for any other users who search for it would find it quickly thanks :)
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