Undervolting 12th Gen Intel Windows 11 22H22

tsvetelin_tote15d202ee said:
@drek4 Hello, I'm also unfortunately stuck trying to undervolt a GF63 Thin with an intel i5-12450H I bought a while ago that I hadn't used but recently underwent all the windows and recent BIOS updates. If you could send me the method that'd be great!
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Sent you a PM!
 
@drek4, i have zero issues with my machine but i do have a question. The sensors in the notebook are they accurate ??? when i check for temps during gaming with coolerboost enabled the Core 8 and Core 12 shows some weird temps. When i recheck after 1 second they temps are down by over 20c and 40c....is this normal ? My notebook does not thermal throttle or have any lag issues. Just like a pc everything is running smooth but this one i really don't understand. Do you ?

Notice core 8 and core 12 ?
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Idle temps: Those are very great, room temperature is 23c
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MichelN86 said:
@drek4, i have zero issues with my machine but i do have a question. The sensors in the notebook are they accurate ??? when i check for temps during gaming with coolerboost enabled the Core 8 and Core 12 shows some weird temps. When i recheck after 1 second they temps are down by over 20c and 40c....is this normal ? My notebook does not thermal throttle or have any lag issues. Just like a pc everything is running smooth but this one i really don't understand. Do you ?

Notice core 8 and core 12 ?




Idle temps: Those are very great, room temperature is 23c
Click to expand...
Yes well we are mostly used to seeing temperature fluctuations more stable and more on a gradual increase, then a gradual decrease,
this was the case for 1 core, 2 cores, 4 cores and 6 cores processors. But today we have 8 P cores and 12 E cores, combined with this,
so we got a whole lot more cores that can be sollicitated, so most cores will initially be put into motion, once the system assesses the real need,
it will deselect the cores that are not needed to perform the tasks at full implementation, so in a certain way software throttling them.
Let us not forget that there is also a certain delay of the information being obtained from the sensors and the sensors themselves.
When I first received my GP66 12UGS, I thought I needed a repaste, since the fluctuations seemed abnormal, but after verification,
I knew it was simply that with so many cores, fluctuations, at some times, would be inevitable, as my research on the matter confirmed.
You must also keep in mind, that with so many cores on the CPU die, some will be slightly better cooled than others, depending on location.

Well no sensor or monitor is 100% accurate and you always have a delay from receiving the information, that might fudge the numbers slightly.

You can circumvent this by increasing your minimal power usage to 100%, same as your maximum CPU usage 100% in your power plan, but keep in mind,
doing this will increase CPU temperatures and will eventually trigger a thermal throttle, in ThrottleStop you can achieve this by unchecking C1E.
 
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MichelN86 said:
@drek4, i have zero issues with my machine but i do have a question. The sensors in the notebook are they accurate ??? when i check for temps during gaming with coolerboost enabled the Core 8 and Core 12 shows some weird temps. When i recheck after 1 second they temps are down by over 20c and 40c....is this normal ? My notebook does not thermal throttle or have any lag issues. Just like a pc everything is running smooth but this one i really don't understand. Do you ?

Notice core 8 and core 12 ?




Idle temps: Those are very great, room temperature is 23c
Click to expand...
This is the main reason that if you leave your CPU PL1/PL2 @ 200/200W, then it will feed all the cores more than required, so in theory,
the maximum the i7 can use is 115W, the maximum the i9 can use is 157W, but if you have always 200W available in PL1/PL2,
then the system can constantly push the cores.
In theory this is great, the only issue this generates a lot of heat and heat is the nemesis of laptops, so thermal throttling must be used,
this affects performance and reduces life expectancy of the CPU, GPU and other components.

So when you now limit the i7 to PL1/PL2 65/72W and the i9 to 65/75W, now the CPU must to manage this power more efficiently, since it's now reduced, by a fair margin.
So when you are gaming and enter an intensive gun battle in a shooter, it will feed mostly the cores that require the power to maintain your frame rates and accompany the GPU,
yet once you are in a dark sewer just moving slowly, it will spread the power more evenly on all cores, thus reducing the core temperatures to a more similar value.

So this is why it's so crucial to modify the power of the CPU, so it performs in it's most efficient way, trying to avoid, or at the very least postpone thermal throttling.
Undervolting is also a great way, to increase efficiency of the CPU, as we all know.
 
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drek4 said:
Well if you change it in the BIOS you simply change the value PL1 65W (65000) PL2 72W (72000) as indicated in the picture (19:00).
You have also the option in ThrottleStop in picture #3 (22:39).
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Can you copy the links of the posts
 
@drek4, thanks! Throttlestop i probably cant use since i am on Linux since september. As for the bios tweak i “might” look at it. Will my games drop in performance if i tweak it to your settings ?

Games are smooth now and i don’t notice any fps drops or delays.
 
MichelN86 said:
@drek4, thanks! Throttlestop i probably cant use since i am on Linux since september. As for the bios tweak i “might” look at it. Will my games drop in performance if i tweak it to your settings ?

Games are smooth now and i don’t notice any fps drops or delays.
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Well this is basically for heat management, it's to keep heat issues in check, so that the gaming performance is not impeded.
If you have no issues and temperature is adequate and to your satisfaction, then as I often say, if it ain't broken, don't fix it ;)
 
MichelN86 said:
Agreed

Idle temps: The nvme drives runs much cooler (idle) on linux then it does in windows.
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Well I knew that with all that background activity in Windows 11, that it most likely heats up the drive, but I never imagined that it caused so much extra heat.
Mighty impressive to say the least, just need some time to install on an external to try out my GS65 with it.
Thank you very much for posting, this is very valuable information to me and I'm sure, to many others.
 
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