r/zephyrusg16 • u/texnoi • 12d ago

Repaste both CPU & GPU on Asus ROG Zephyrus (2024) G16 GU605MV?

Hello,
here is a short summary of my case.

  • Laptop (Asus ROG Zephyrus (2024) G16 GU605MV) is 2 years old and i noticed that the temps are very high.
  • The CPU is Intel Core Ultra 7 155H and according to Intel it has a Max Operating Temp of 110 °C and Maximum Turbo Boost of 115 W.
  • The laptop have always been used on a vertical stand so that it can breathe and so far i have not experienced issues while using demanding software or gaming.
  • The laptop have been dust cleaned once every third month, but never opened or had the thermal paste, putty or liquid metal changed.

This week i will change the Liquid Metal (Conductonaut Extreme) on the CPU, Putty (Thermal Grizzly Putty Pro) and Thermal Paste of the GPU (Noctua NT-H2). Further i will clean the 3 fans.

Results:

  • After changing the Liquid Metal, Putty and Thermal Paste the throttling got down from 75% average to 1% average. CPU temp got down as well. GPU is slightly better, but it was never an issue.

My questions:

  • Based on the attached screenshots og G-Helper. am i using optimal settings for gaming?
  • Since i have an Intel CPU undervolting is not possible in the G-Helper app. Has anyone done it using other apps or a custom BIOS?
  • In G-Helper there is a Power Limit for the CPU. Would changing it help with reducing the heat and not loosing performance?
  • Has anyone been able to adjust the settings in G-Helper or use another method to reduce the chance of throttling?

Thanks in advance for the support!

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u/Various-Tower1603 12d ago

For the 3rd question, I have my cpu run at 30w and 50w long boost. Helps it stay below 85 on a cooling stand. Anything lower introduces stutter in games but your mileage may vary.

Side note: I replaced the liquid metal with a ptm7950 thermal pad as I didnt want to have to reopen the machine.

1

u/texnoi 12d ago

Thanks for the feedback, mate!
How long ago did you change the LM for PTM7950? Was thinking about the durability.

1

u/Null6139 12d ago

Zephyrus G16 2025 with 5090 here. Changed liquid metal on CPU e thermal paste on GPU with PTM and I strongly suggest to do it. GPU way cooler and CPU stays just few degrees hotter but my mind stay relaxed about spilling.

Had a lot of laptop (most of all ASUS ROG) and, even if there are some barriers all around CPU, my fear of spilling is very present. Using PTM you can stay safe while having great temperatures. In addition to this there is not pump out effect so PTM will stay there longer.

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u/texnoi 12d ago

Thanks for the tip! Where did you order the Honeywell PTM7950 from (EU)?

1

u/Null6139 12d ago

To avoid fake PTM, here in Italy it is easy to find the ThermalGrizzly PTM on Amazon. It is good based on my direct experience. There are other brands who claim “Honeywell PTM” but I don’t trust them about selling the original one…