I have an ROG Strix 4090 that I bought back in March 2023, and I've been using it normally without any extreme activities, overclocking, or thermal paste replacements. Recently, I sold it to someone who ran a full FurMark test, and the GPU started overheating, reaching about 110°C on the hotspot. The GPU is no longer under warranty, but the buyer tried replacing the thermal paste, and it hasn't helped. The system is set up on an open test bench in a regular room temperature environment. Here are the details from the FurMark test:
- GPU Clock: 2250Mhz
- GPU Temp: 87.9C
- Hotspot: 109.7C
- Memory Clock: 1312.7Mhz
- Memory Temp: 46C
- Fan Speed: 100%
- Board Power Draw: 340W
I'm wondering what could be causing this overheating issue. Here are a few thoughts I had:
1. The buyer may have applied too much thermal paste. Could that be a significant factor in the overheating?
2. The memory temperatures seem okay, so I assume the memory pads are not problematic. Is that a reasonable assumption?
3. Is there a possibility that the temperature sensor or monitoring module is damaged?
Any advice would be super helpful!
2 Answers
ASUS GPUs can have overheating issues if not properly managed. I suggest switching to a better thermal paste like PTM7950 because standard thermal pastes can struggle with the intense temperature spikes from GPUs. It might be worth looking into this, especially if he plans on pushing the card hard.
Definitely something to consider! The right thermal solution can make a big difference.
It sounds like the airflow might be okay since he's using an open test bench, but definitely check on the case setup just in case. As for the thermal paste, it's crucial to use a thin layer, especially for high-performance cards like that. Too much can actually inhibit heat transfer, so having him switch to just a thin layer could help a lot. By the way, ASUS usually uses quality pads, but you might want to inspect them to be sure they're not the problem.
Yeah, he mentioned he's going to try reapplying the paste soon. The memory pads look fine from the pic he shared, but it’s worth checking you know?
I've heard some stories about ASUS cards overheating more than others, so it wouldn’t hurt to verify the quality of the paste!

I totally agree! If it were still my card, I'd make that switch in a heartbeat. But since I sold it, I'm trying to keep it as original as possible.