How to lower GPU temps after undervolting in Acer Predator Helios 300 PH315-52?

hdflat

Hello all, 

I recently started playing games on my Acer Predator Helios 300 PH315-52 / i7 9750 and noticed that the CPU temps were overshooting 90C. That was a matter of concern for me bc long term heat = destruction of my precious machine. Around this time, my GPU temp was around 70-80C which was pretty okay.

I looked around a bit and tried a few different things and eventually decided to try undervolting to lower my CPU temp.
Found this great tutorial by @Red-Sand
https://www.youtube.com/watch?v=F1rs92CiYxU&t=4s

I followed it - also disabled turbo for good measure - and my CPU temps are now down to around 70ish. 

The problem is my GPU temps are rising over 85C with minimal play. 

What can I do to correct this? Are there some values I can play around with and see what works? 

I understand that Afterburner can be used to set a temp limit for the GPU but I haven't found a good tutorial that tells me how to do that. 

Please help!
 
( edited the title to add the model name )

hdflat

Hey, thanks for your response. 

I cleaned both my fans about a couple of weeks ago. My GPU temperature was fine before I undervolted using Throttlestop today.

The undervolting helped decrease my CPU temp but I observed an increase in GPU temp after I did that. 

I have a feeling my GPU might be compensating for the throttling of the CPU. I

 just got done with another round of gaming. GPU temps were 80C+ throughout but my CPU temps didn't rise over 70. 

StevenGen

hdflat said:

Hey, thanks for your response. 

I cleaned both my fans about a couple of weeks ago. My GPU temperature was fine before I undervolted using Throttlestop today.

The undervolting helped decrease my CPU temp but I observed an increase in GPU temp after I did that. 

I have a feeling my GPU might be compensating for the throttling of the CPU. I

 just got done with another round of gaming. GPU temps were 80C+ throughout but my CPU temps didn't rise over 70. 

Just remember that a laptop is not like a desktop and you are restricted to the cooling ability of your laptop. IMO Leave your laptop OEM and don't change anything, make sure that the fans are clean and working 100% and that the cpu/gpu are pasted with a high quality paste and pads (I suggest the Thermal Grizzly range) as what I use is their liquid metal paste (that is the best paste for overheating of cpu's and gpu's as it works to reduce temps by at least 10c to 15c but, this is a very dangerous paste to apply as its conductive and if NOT applied correctly and you apply too much then a users laptop will be damaged with major circuitries damage to components (so look at the manufacturers application guide and follow them exactly) also use a top tablet cooler or make one yourself so more cold air is pumped into the laptops enclosure as that will reduce temps by as much as 10c. Undervolting and changing your laptops settings unnecessarily will mostly do nothing or can damage your laptop components. 

hdflat

@StevenGen thanks for weighing in.

The suggestions for reducing overall CPU and GPU temp that I came across on this forum earlier seemed to prioritize doing an undervolt over a repaste.

I cleaned the fans out and have ensured both are working optimally.

I am also considering doing a repaste and swapping out my thermal pads for fresh ones. Came across a good tutorial for it that uses kryonaut grizzly thermal grease. Thanks for the word of caution on this.

hdflat

Also, interesting observation - whether I play a game on the lowest performance or highest performance settings, my GPU temp stays pretty much stable at 85C throughout. 

I really think this might have something to do with the undervolting settings.