Dr. Robert Castellano's Semiconductor Deep Dive Newsletter

Dr. Robert Castellano's Semiconductor Deep Dive Newsletter

From Substack to State Media: How My Self-Destruct Chip Analysis Went Global

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Dr. Robert Castellano
Aug 11, 2025
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On July 18, I published “How Nvidia Can Build Self-Destruct H20 AI Chips to Prevent China’s Military Use,” an article exploring the technical feasibility and strategic logic of embedding kill switches or conditional-access mechanisms into GPUs like Nvidia’s H20. The idea was simple in concept but complex in execution: build into the hardware and firmwar…

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