2019 Helios 300 (PH 315-52) low CPU power limit (TDP)

Either bad paste on cpu (this case can be easily fixed by you) or maybe heatsink align to cpu not flat, pressing not much

Anyway your temperature must not exceed 80-85 during only cpu load

I can confirm that with proper thermopaste and proper heatsink you will never reach a throttling under combined stress load cpu+gpu, you will be in safety with temperatures 85C on cpu and 80C on gpu with fans running at 3500 and 4000 rpm.

After activating coolbost you can increase rpm to 4500 and 5000 rpm and it will drop temperature to 79C on cpu and 72C gpu.

The termopaste I use is Prolimatech pk-3. I also replaced stock thermopads and put thermopads instead of pink paste on video memory but it’s optional.

Sosnafnm you definitely need to repaste it properly with kryonaut or similar if you can yourself if not send it back for a repaste your cpu its way too high shouldnt go above 80'ish the thermal pads replacement ist also a good idea as @belik stated but i wouldnt touch it at all if your not sure what youre doing and try to disassemble everything very carefully and leave everything as it was previously only cleaning/repasting the cpu/gpu

All comments

Yes PL1 is 45w
Try to run stress test in aida64 cpu+mem+gpu, your PL must be solid 45w for constant load for hours

This way

@Sosnafnm just want to add that you won't achieve the max tdp if whatever you are doing doesn't need it as @belik stated you will only see it while stress testing it for a long period of time if its working fine I wouldn't worry about it some games are more cpu demanding some more gpu they never have the same behaviour even in the same game so get some stress tests done to satisfy your doubts 👍

https://www.youtube.com/watch?v=7WWmT-iYaoU&t=153s

Thanks you guys for the answers!

I did the Aida 64 test for more than 15 minutes - 40 (screenshot at the bottom of the post) and the results were in line with my observations in games - it was close to 25W most of the time (those 44.94 from the maximum column happened for a couple seconds at the start and went down in a blink of an eye). When I pushed the turbo button during the testing it got to about about 31-32 W max. What is weird my CPU temperatures are really high, is my laptop thermal throttling?

From what I've seen people testing games on this laptop have normal TDP values from the beginning of their playing, also when they push the turbo button it immediately rises to 56W - look at this Own or Disown video. He tested a couple of games on the helios 300 (there are timestamps in the description) and all of them are behaving that way.

Also this guy playing Batman Arkham Knight has normal TDP values on his video,

https://www.youtube.com/watch?v=xoKgTRsIQTU&t=128s

I tested this game and have not reached those TDP's (mine were under 30) - https://ibb.co/30hxqrB

What's wrong with my laptop?

Image: https://us.v-cdn.net/6029997/uploads/editor/yj/14iindwhts6v.jpg

st

Your cpu throttles at 93C and thus works at 1.6Ghz 0.64v instead of 2.8Ghz 0.87v in my case
You need to repaste and don’t let cpu to go above 90С

Also it can be performance power profile in windows, is it set to max?

Sosnafnm get some kryonaut and repaste it if you can yourself without voiding the warranty if not send it back for a repaste

belik said:

Your cpu throttles at 93C and thus works at 1.6Ghz 0.64v instead of 2.8Ghz 0.87v in my case
You need to repaste and don’t let cpu to go above 90С

Also it can be performance power profile in windows, is it set to max?

I have it set to the Acer power profile, the max Cpu limit there is set to 100 (no limit), also when I clicked the battery icon on the tray I moved it to the right side for maximum power/performance (I did it before the tests, no real effects).
I guess repasting is my only solution?

Ok before you repaste try the stress test in aida only with the first 4 checkboxes, without gpu
In this case your cpu temperature must be 80-85 ie with no throttling and power limit must be constant 45w

belik said:

Ok before you repaste try the stress test in aida only with the first 4 checkboxes, without gpu
In this case your cpu temperature must be 80-85 ie with no throttling and power limit must be constant 45w

I did the test without the GPU, unfortunately the results were similiar to the previous ones, the temperatures are also in the 90s. What does that mean?

Image: https://us.v-cdn.net/6029997/uploads/editor/0p/bdv1shivg5no.jpg

Either bad paste on cpu (this case can be easily fixed by you) or maybe heatsink align to cpu not flat, pressing not much

Anyway your temperature must not exceed 80-85 during only cpu load

Throttling you can see in Aida stress window on the first tab Temperatures, where green grid is

belik said:

Throttling you can see in Aida stress window on the first tab Temperatures, where green grid is

Yup, it look like it's throttling in the first tab

Image: https://us.v-cdn.net/6029997/uploads/editor/db/e3h6qobmsrwj.jpg

So the root cause is clear now, this is a bad cooling, a thermopaste or a heatsink itself

I can confirm that with proper thermopaste and proper heatsink you will never reach a throttling under combined stress load cpu+gpu, you will be in safety with temperatures 85C on cpu and 80C on gpu with fans running at 3500 and 4000 rpm.

After activating coolbost you can increase rpm to 4500 and 5000 rpm and it will drop temperature to 79C on cpu and 72C gpu.

The termopaste I use is Prolimatech pk-3. I also replaced stock thermopads and put thermopads instead of pink paste on video memory but it’s optional.

Sosnafnm you definitely need to repaste it properly with kryonaut or similar if you can yourself if not send it back for a repaste your cpu its way too high shouldnt go above 80'ish the thermal pads replacement ist also a good idea as @belik stated but i wouldnt touch it at all if your not sure what youre doing and try to disassemble everything very carefully and leave everything as it was previously only cleaning/repasting the cpu/gpu

Thanks guys for the help! I need to check if repasting will void Acer 's warranty in my country (Poland), and then I will repaste it or send it so they can do it for me.
Thanks again!

Zadoren

@Sosnafnm
Did you fix it? Unfortunately, I am also experiencing this issue.

Zadoren said:

@Sosnafnm
Did you fix it? Unfortunately, I am also experiencing this issue.

I did. By sending it to the Acer service. They replaced the whole cooling system so i glad I did it, as I'm not sure if repasting myslelf would solve the problem. Now it's working as it should. I would recommend doind the same if your test results are similar.

Zadoren

@Sosnafnm
what happened to your cooling and your temperatures after you sent it to Acer service?