The GeForce RTX 4090 gaming graphics card, both as an NVIDIA first-party Founders Edition, and custom-design by AIC partners, undergoes assembly in China. A new U.S. Government trade regulation restricts NVIDIA from selling it in the Chinese domestic market. The enthusiast-segment graphics card joins several other high performance AI processors, such as the "Hopper" H800, and "Ampere" A800. If you recall, the H800 and A800 are special China-specific variants of the H100 and A100, respectively, which come with performance reductions at the hardware-level, to fly below the AI processor performance limits set by the U.S. Government. The only reasons we can think of why these chips are on the list is if end-users in China have figured out ways around these performance limiters, or are buying in greater scale to achieve the desired performance. The fresh trade embargo released on October 17 covers the A100, A800, H100, H800, L40, L40S, and RTX 4090.