This widget could not be displayed.
This widget could not be displayed.
cancel
Showing results for 
Search instead for 
Did you mean: 

Zenbook 2024. Heating and Thermal Throttle

Daddino
Star II

I have a Zenbook 2024 OLED with an Intel Core Ultra 9 185H. My issue is that the CPU reaches 100°C after just 5 seconds at 100% load, even when the ambient temperature is ZERO°C and the laptop is elevated to allow for better airflow. The chassis obviously feels freezing cold, but the throttling is exaggerated: even at 0°C, after a few seconds at full load, the CPU stabilizes at around 2800MHz and the temperatures at around 80°C.
Naturally, at normal temperatures (around 20°C indoors), the situation worsens further.
After speaking with another user who has the same laptop with the Core Ultra 9 185H, it seems that their device doesn't behave this drastically. (I’m attaching test photos taken at 0°C).
Is there a specific test I can run to get precise reference values? To measure CPU usage, clock speed, and temperatures... so I can figure out if my laptop has an issue before sending it in for service?

I understand that a Zenbook is not designed to dissipate a lot of heat, but my situation is somewhere between scary and ridiculous, isn't it?
Is there anyone with the same notebook who can provide me with some reference points?

Thank you everyone

6 REPLIES 6

Falcon_ASUS
Moderator
Moderator

@Daddino 
May I know the complete model of the laptop you are using?
Have you updated the BIOS and system version to the latest versions? 
I have sent you a message; please record the log via the method mentioned in the message and provide it to me. 
I will forward it to the relevant department for further assistance. 
Sorry for any inconvenience it may be caused. 

Thanks for replying,
the model is UX3405MA and BIOS version is 309
I believe everything is up to date including drivers and Windows 11.

Falcon_ASUS
Moderator
Moderator

@Daddino 
The relevant department has indicated that, according to the log, both the P cores and E cores are operating below 85 degrees, which is within the thermal design cooling capacity.
The reported issue mainly occurs because the AI software being run at the time places a stress level greater than the designed cooling capacity. Thank you.

Daddino
Star II

Thank you once more for your message.
I'm sorry, help me with this last doubt. Am I misreading the logs?
Because as I could see in the file generated, the cpu P cores hit 101°C within few seconds from the beginning of the test, when their clock was around 3500MHz (without ever reaching 4000MHz, which would be anyway lower by far than the disigned maximum of 5100Mhz).
After that, the clock drops (peak 800MHz) and after a while of tiny up and down, at last it stabilize itself around 2200MHz, I guess that happens in order to mantain the temperature below 85°C.
Unfortunately, as I see it, the P-cores hit very unsafe temperatures AND they throttle to "less than half" of the designed clock of this CPU.
The E-cores do a similar thing, of course with lower clock but exact same high temperatures.

Besides, Cinebench 2024 score is 695 (in a second test I've obtained 655)  while, if I look around, tests with the same CPU (and without dedicated GPU) are going from a low 828 (Huawei MateBook X Pro 2024 ) to a high 1067 (Minisforum AtomMan X7 Ti ).
It makes me feel that my laptop not only is having a temperature issue but also a serious performance issue...
I'm having a score 16% lower than the worst score I could find around on the internet...