@TheAhmadOsman: PRO TIP Two GPUs stacked on top of each other - Top card will hit thermal limits first - GPUs performance follow hotter…
Summary
A pro tip for managing GPU temperatures in stacked setups, recommending the use of NVML to adjust fan speeds on cooler cards for better performance.
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Cached at: 08/21/26, 09:08 AM
PRO TIP
Two GPUs stacked on top of each other
- Top card will hit thermal limits first
- GPUs performance follow hotter card
- Bottom card still has unused headroom
The fix?
- Build a script using NVML
- Track top card temp
- Make cooler card fans go harder to make up for it
Mike Bradley (@MikeBradleyAI): For whoever needs to hear this. Most modern Nvidia GPUs have manual fan speed controls. NVML is your friend. Don’t run stacked GPUs in auto mode. The cooler bottom card will be lazy on airflow while the top card cooks. Make that bottom card earn its keep!
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