I7 9750H undervolting (am I going in the right direction)?

[cumdogmillionaire]

I've been lurking on these forums for a long time now, reading and trying to get to grips with this massive learning curve. I've got myself an i7 9750h & RTX2070 laptop but even during the simplest of games or sometimes tasks, I'm finding that the fans seem to kick up into what I call fondly "jet engine" mode.
Main goal of my venture is to reduce how often my unit goes into thermal throttling and into the 90s when doing what should be simple and easy tasks

I've been dialing in an undervolt whilst testing with Cinebench to see what kind of results I could gain. Attached below are my results. Would anyone be able to comment and suggest ways to further optimize this?

Main Goal - prevent thermal throttling and in turn reduce fan noise/heat output.
UnderVolt Settings & results in multicore Cinebench r23:

see the screenshots attached for more FIVR and TPL settings.

 

[unclewebb]

suggest ways to further optimize this?

Your settings look OK. You have already optimized your 9750H as much as it can be optimized.

What speed does your CPU run at during Cinebench? Is there any throttling? Is anything lighting up red in Limit Reasons? Turn on the Log File option when testing so you have a record of your CPU performance. Any reasons for throttling will be recorded in the log file.

I have seen 9750H Cinebench scores that are much higher.

AlekseyWMZ`s Cinebench - R23 Multi Core with BenchMate score: 8427 cb with a Core i7 9750H

The Core i7 9750H @ 4416.5MHzscores getScoreFormatted in the Cinebench - R23 Multi Core with BenchMate benchmark. AlekseyWMZranks #859 worldwide and #1 in the hardware class. Find out more at HWBOT.

hwbot.org

If your CPU is able to maintain full speed during the entire Cinebench run then the only way you can improve your score is by reducing the amount of background apps running on your computer. When sitting at the desktop doing nothing, the C0% reported by ThrottleStop should be under 1%. Look in the Task Manager Details section if you are way beyond 1%. Find out what is running on your computer.

"jet engine" mode

Not much you can do when a manufacturer uses an inadequate heatsink and resorts to running a small fan at warp speed to try to keep things cool. You can reduce the turbo ratios or you can reduce the turbo power limits but that is going to reduce maximum performance. You are already undervolting as much as one can reliably undervolt a 9750H.

 

[cumdogmillionaire]

@unclewebb
Firstly, a huge thank you for the assistance, means a lot to a noob like me.

Although now that you mention it, I do get a red POWER symbol appear after which the speeds would drop from 4Ghz to around 3.6Ghz, performance wise I'm not too worried, however I'm hoping this wont be damaging the chipset. When I get home tonight, Ill be sure to get a log file done for the same test and attach it in my next post.

I managed to near enough eliminate thermal throttling though so no more PROCHOT errors with an offset of 6 degrees. No artificating, game breaking glitches or instability after running Heaven on loop for about 35mins. Temps were somewhat steady around the mid 80s towards the end of that run as well. The only other query I had was about the Speedshift EPP setting? I didn't see much change in the running speeds regardless of whether I used it? Have I configured it wrong or is it simply redundant with Windows 11's power plan settings writing over that specific registry?

 

[unclewebb]

I do get a red POWER symbol appear after which the speeds would drop

Some laptops use an embedded controller to limit 9750H CPUs to the 45W TDP value. The EC power limit is separate from the MSR and MMIO power limits that ThrottleStop lets you adjust.

this wont be damaging the chipset

Power limit throttling is normal for Intel mobile CPUs. It does not hurt anything. It just reduces the CPU speed and performance.

Speed Shift EPP

I recommend not checking the Speed Shift EPP box on the main screen of ThrottleStop. Windows 11 is able to control this setting if you let it. There is no point in having ThrottleStop and Windows write different values to the same CPU Speed Shift control register as they both try to fight over control of the CPU.

eliminate thermal throttling

Laptops are all poorly designed. It is difficult to solve all of the problems. ThrottleStop is a useful tool to try and balance heat vs performance. That is all you can do.

 

[cumdogmillionaire]

Some laptops use an embedded controller to limit 9750H CPUs to the 45W TDP value. The EC power limit is separate from the MSR and MMIO power limits that ThrottleStop lets you adjust.


Power limit throttling is normal for Intel mobile CPUs. It does not hurt anything. It just reduces the CPU speed and performance.


I recommend not checking the Speed Shift EPP box on the main screen of ThrottleStop. Windows 11 is able to control this setting if you let it. There is no point in having ThrottleStop and Windows write different values to the same CPU Speed Shift control register as they both try to fight over control of the CPU.


Laptops are all poorly designed. It is difficult to solve all of the problems. ThrottleStop is a useful tool to try and balance heat vs performance. That is all you can do.

Thank you. Ill bear in mind about the Speed Shift EPP setting and go from here. I know how poorly designed the older mobile chips are and the cooling is but needs must whilst I'm away from home so I decided to buy this used laptop.

Only thing left is for me to try that magic Honeywell thermal pad. I've got it on order but slight lead time to where I am in Aus.