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Stable undervolt with throttlestop on rog strix G16 2023 series.

o0Kingmaster0o
Level 9

For owners of Asus Rog Strix G16 2023 models with Intel Core i9 13980HX processor.

If you support the community with screenshots and configurations using the throttlestop program, although each processor is different, it also helps to have an estimate of which configuration is more or less stable in this type of processors that are quite hot at full capacity, Any contribution is welcome.

Please, if you can provide your configurations after bios 331, it is better, since it includes the microcode 0x12b.

Asus rog strix g16 (2023) - Intel core i9 13980HX - 32 gb ddr5 Kingston fury 5600 - Nvidia rtx 4070 - 2 ssd raid 0 NVMe Kingston KC3000 2 Tb.
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4 REPLIES 4

eXplode
Level 13

 

This BIOS is limiting CPU performance significantly after version 318. Even in benchmarks, the CPU doesn't go above 120-130 watts. For this reason, I use BIOS version 318, which allows me to draw more power from the CPU, along with an undervolt setup:

Core: -170 mV

P-Cache: -170 mV

E-Cache: -140 mV


Hyper-threading is OFF, allowing me to achieve higher FPS in games, which is my priority over multi-core tasks. Disabling hyper-threading also improves application latency and lets you apply a bigger negative voltage, which helps reduce temperatures and power consumption.

Currently, my setup includes the above voltage settings, hyper-threading turned off, and 8 efficient cores disabled. This gives more power to the P-cores, which are locked at 5.3 GHz, while the E-cores are locked at 4 GHz. With this configuration, I can maintain 110 watts of power usage in games, with stable CPU frequencies and no drops.

Disabling the 8 E-cores frees up more power for the P-cores, reducing overall voltage usage. My CPU voltage never exceeds 1.37 volts with this setup.

 

Screenshot 2024-12-15 023431.png

eXplode
Level 13

 

 

I forgot to mention: if you want a stable undervolt with all cores ON and hyper-threading enabled, you can try the following settings:

P-Cores: -160 mV

P-Cache: -160 mV

E-Cache: -140 mV


However, with your BIOS version, the chances of getting good performance are slim. When I tried BIOS 331, I couldn’t get more than 65 watts usage in any game.

Envyuwu
Level 7

Hey @eXplode, very interesting, I myself started having some instability after updating to latest BIOS, can you say whether you are using latest ASUS System Control Interface v3? If not, which version are you using? 

my System Control Interface v3 version is 3.1.38.0 . I believe the main issue with undervolting and performance comes from the BIOS. Every version after 318 is limited, and even if you apply a good undervolt, you won’t see a significant improvement in performance. You can try using BIOS version 318.

However, the most important factors after that are the power your CPU uses and its temperature. For the performance shown on the graph, I use the IETS GT 500 cooler, and my fans are set to 5000 RPM for the CPU, GPU, and MID fan.

If you decide to try BIOS version 318, sometimes a BIOS update or downgrade can cause issues, and you may need to reset the BIOS. Here’s how to do it:

  1. Turn off the laptop.
  2. Plug in the charger.
  3. Hold the power button for one minute.

You can use this reset method if you encounter any problems after a BIOS update.

I also use three different profiles on GHelper:

  1. Limited to 65 watts with fans at 4000 RPM.
  2. Set to 90 watts with fans at 4500 RPM.
  3. Unlimited wattage power with fans at 5000 RPM.

Additionally, you should try different voltage configurations for your CPU because there may be variations in the manufacturing process, meaning your optimal voltage could differ.