How to Undervolt PT315-53-78HH

Broadey

Hiya, i have got the PT315-53-78HH thats got a i7 11800H processor in running windows 11, has anyone undervolted this and what results did you get ?

Thank you :)

[Thread was edited to include the topic issue]

JackE

Even if two identically-equipped machines were tested side by side, the results would probably vary. For example, the sweet spot (however you want to define it, eg combination of battery life, FPS, temperature, etc) for one machine might be 50mv under the nominal factory setting. While 20mv over for the other. This is mainly due to normal chipset production ± variations from the advertised nominal power and/or voltage values.

Jameswalter

Step 1

Disable Secure Boot by going into BIOS > Boot > Secure Boot > Disabled.

You can re enable secure boot once you unlock UV.

Note: You might have to set up an admin password to do this if the option is grayed out. (Use something easy to remember because you definitely don't want to forget that)

Step 2

Download this tool and extract the contents inside the zip folder to C:\insyde-toolAfter you do that, open a cmd.exe prompt as administrator then enter

cd C:\insyde-tool  

Step 3

Then enter command dir to confirm you're in the right directory, you should see multiple files including "H2OUVE-W-CONSOLEx64.exe". once you're there, run the following command

H2OUVE-W-CONSOLEx64.exe -gv vars.txt  

Note: If you only see a folder named "InsydeH2OUVE_x86_WINx64_200.00.01.00" or similar, bring the contents of that folder outside into "insyde-tool" or use the cd command to change the directory to that folder.

Step 4

That command should create a file named "vars.txt" in the folder where you extracted the tool to earlier. Open with notepad to edit. CTRL+F to search for CpuSetup. Find the value as shown in the screenshot. Additionally take note of the value underlined in red. (It varies on each vars extraction)

Change the value from 01 to 00.

Regards,

james