Nvidia DGX Spark encrypted firmware slows Linux inference to 35% of Windows speed
A detailed test of the MSI Prestige N16 Flip AI Plus laptop, part of Nvidia's RTX Spark platform, shows that native Linux inference runs at roughly 35% of Windows performance when the laptop is plugged in. The cause is an encrypted firmware power table managed by a Windows-only component called the Nvidia Platform Controllers and Framework, which balances power between CPU and GPU. Linux cannot…
Key points
- GPU clock locked to ~780 MHz on Linux when plugged in vs ~2.2 GHz on Windows
- Root cause: encrypted firmware power table only Windows can decrypt
The story so far
4 episodes →- Nvidia DGX Spark encrypted firmware slows Linux inference to 35% of Windows speedthis story
Nvidia DGX Spark encrypted firmware slows inference speed to 35% on Linux
mindstudio.ai · 1 November 2026
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1source- Hacker News discussion · 49 pointsnews.ycombinator.com
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