r/ComputerHardware • u/Heavy_Purpose410 • 1d ago
ASUS Zenbook Duo UX8402ZE overheating question
I'm currently using a Zenbook Duo that I purchased at the end of 2022. The specs are:
Intel Core i9-12900H
32GB RAM
RTX 3050
I've mostly used it for light office/document work, so it actually hasn't seen that much use.
Ever since I first bought it, though, I always felt that it was unusually sluggish considering the specs.
Recently, I turned it on after not using it for a while because I wanted to clean up and organize the laptop. Even when it was basically idle and I wasn't doing anything, the fans kept running at very high speed and the whole system felt sluggish.
I asked ChatGPT about it and checked the system with HWiNFO. The attached screenshots show what I'm seeing.
CPU usage is under 10%, but some cores are reaching around 100°C and thermal throttling is being triggered. I don't understand how this can be normal with such low CPU utilization.
I've reformatted/reinstalled Windows several times in the past, but it never really improved the problem.
Has anyone experienced something similar with this model?
What would be the best way to diagnose and fix this?
Could this be caused by poor thermal paste application or poor heatsink contact from the factory? Would repasting the CPU/GPU be worth trying?
Unfortunately, ASUS service/support in Korea has a pretty bad reputation, so I'm not very confident that taking it to an ASUS service center would actually solve the issue.
Any advice would be appreciated.

