Horrible CPU performance of helios 300. Please help

Arsalaank17

So, I have a predator helios 300.
 The specs of the laptop are : - i7-8750h , GTX 1050ti , 8GB RAM
I have Intel Extreme Tuning Utility. I decided to run a benchmark test. I realised that my results are terrible. My benchmark score was around 800 and people with 8750h get like 1200 ish. Also while running the test it was showing "Power Limit Throttling" - Yes. This is also a very bad thing. Also , I tried undervolting the CPU it did not help. My CPU temps were around 75 degrees (after undervolting). Please tell me how to fix "Power Limit Throttling"

Arsalaank17

My laptop= Predator PH315-51

brummyfan2

Hi,
You could try the solution in this video but I don't think you can disable Intel turbo boost in BIOS, you could try other methods in the link below to achieve it.
https://www.youtube.com/watch?v=U6LgeE56cQ4
https://www.geeks3d.com/20170213/how-to-disable-intel-turbo-boost-technology-on-a-notebook/

Red-Sand

How much did you undervolt your CPU?

Arsalaank17

Hey! Thanks so much for the quick response brummyfan. Your solution did remove the power limit throttling issue, reduced the temperature to 57 degrees at 100% utilization!! However, the cpu became much worse performance wise. My score was lowered as the clock speed was now limited to only 2.2 Ghz. I really want the score to increase because that reflects the cpu performance

Arsalaank17

I undervolted my cpu to -0.160

Red-Sand

You could give throttlestop a try (instead of XTU).
If you do be sure to set undervolt back to 0 before uninstalling XTU.

Also try -0.140 offset for core/cache as there have been members in these forums who found a temperature increase when undervolting the 8th gen too low. -0.140 has been a good balance point for this CPU for everyone.

Arsalaank17

Here is the picture before undervolting the cpu. Please take a look : -

Arsalaank17

Here is the picture after undervolting the cpu to -0.140

Red-Sand

I see your proposed package power (short boost) in the chart on the top right has been changed to 45w opposed to the stock 56w.
You need to apply the default XTU profile and only change undervolt and nothing else unless you understand it.

At 45w cap thats set your CPU is running normally.
Default profile, show values, apply, reboot.
Check chart to be sure default matches proposed.

Arsalaank17

This value should be around 1200 because that is the average for my cpu

Arsalaank17

Whoops! Never realised that thanks for telling me that but still no help

Red-Sand

There are a lot of variables when it comes to power packages. (ASUS locks pkg pwr to 25w giving 1.8GHz long speed LMAO).
If you have many processes running in the background your CPU will be split between tasks. And I dont mean programs I mean task schedules and services. Try this and see if it helps.

https://youtu.be/XTPMwQKlfPE

Arsalaank17

Well doing all that did help a little bit as the scores improved. However , there still was power limit throttling while benchmarking and I believe that is the thing which is not letting me reach near the average (1200). Thanks so much tho!

Red-Sand

If you used throttlestop you could set speed shift energy performance profile (EPP) to 0 improving performance.

Mind you that Im only helping you with benchmarks.
In a benchmark your CPU is given a single task over a period of time and since the task does not change, your package power limit timer engauges which reduces power limits from 56w to 45w, effectively lowering clock speeds.

However you may be glad to know this has no bearing on a game itself, as a games task(s) change frequently leaving the CPU at a higher package power all the time. (Always using 56w @ 3.9GHz) You can download a on screen display tool such as rivatuner to display your clock speeds while gaming to confirm what I say.

The 8th gen CPUs are quite finicky with package power limits and Acer has graciously not removed the stock power limits (Other brands cap in favor of temps). In XTU try setting the timer for short power limit to the max (96 seconds) and see if it sticks. I don't have a 8th gen Helios 300 but I do own a Helios 500 with the i7-8750H and before Acer unlocked TDP caps this is the method I used to improve benchmarks.

MrGrudev

https://community.acer.com/en/discussion/comment/607777#Comment_607777
Read this. I have posted screenshots of my throttlestop settings at the end of the discussion. I have same CPU and by applying this settings I reduced the temperature, increased the performance. CPU throttles only on heavy benchmarking from max 3.9 GHZ to 3.8. On gaming no throttling. And the result on Cinebench R15 is 1247.

Arsalaank17

Thank you for the answer mrgrudev i tried ur settings but still my score was only 829 Again there was power limit throttling during benchmarking. It seems I have to live with this

Arsalaank17

hmmm. I think i am understanding the problem. I think this power limit throttling happens when the package tdp crosses like 48watts. Is there any way other than undervolting to reduce package tdp cause undervolting is not enough. I might be wrong tho i am not a computer genius

Arsalaank17

Another thing, my cinebench score was 1143 which i believe is quite decent for my cpu is there something wrong with intel xtu benchmarking?

MrGrudev

Your CPU should run at 56W for at least 28 sec before it throttles back to 45W. With my settings my CPU is running at 3.9 at about 48W and then it throttles to 3.8 at 45W. Then it should run at 45W for as long as you want without further power throttling.
Better return everything back to default in the XTU, remove the throttlestop config file. TURN OFF the notebook. Start up and reset BIOS settings and then try to set the thrrottlestop once again from the begining.
What is your Cinebench score now?

ven98

To the OP:

By looking at the memory utilisation bar, I assume your RAM is 8GB single module. Having 2 memory modules working in a dual channel will increase benchmark score, but I don't know by how much.