US export controls on Nvidia's H20 chip (designed for China market) may face unintended geopolitical consequences.

On April 15, U.S. chipmaker Nvidia published a filing to the U.S. Securities and Exchange Commission indicating that the government has restricted the company from selling its less advanced graphics processing unit (GPU)—the H20—to China. The company is now required to obtain a license from the U.S. Commerce Department's Bureau of Industry and Security to sell the H20 and any other chips "achieving the H20's memory bandwidth, interconnect bandwidth, or combination thereof" to China, according to the filing. Similarly, a filing from AMD stated that the firm is now restricted from selling its MI308 GPU to China—and likely any chips that have equal or higher performance in the future. Intel's artificial intelligence accelerator Gaudi will also be restricted under the new control threshold, which reportedly appears to limit chips with total DRAM bandwidth of 1,400 gigabytes per second or more, input/output bandwidth of 1,100 GB per second or more, or a total of both of 1,700 GB per second or more.

The new restriction came roughly a week after NPR reported that the Trump administration had decided to back off on regulating the H20. The possible new threshold not only restricts the advanced chips that were already controlled but also the less advanced chips from Nvidia, AMD, and other chipmakers, including Nvidia's H20, AMD's MI308X, and Intel's Gaudi, which were used to comply with the export control threshold and intended primarily for sale in the Chinese market. Prior to that report, curbs on the H20 and chips with comparable performance had been widely anticipated by analysts on Wall Street, industry experts in Silicon Valley, and policy circles in Washington.

The impact of the new rule on the industry is profound. With the new controls, Nvidia is estimated to immediately lose about $15 billion to $16 billion, according to a J.P. Morgan analysis. AMD, on the other hand, faces $1.5 billion to 1.8 billion in lost revenue, accounting for roughly 10 percent of its estimated data center revenue this year. If the restriction persists, it will fundamentally reshape the Chinese AI chip market landscape and mark the start of a broader retreat for U.S. AI accelerators from China. The new rule will make it nearly impossible for U.S. firms such as Nvidia and AMD to design and sell chips that are export-compliant and competitive in the Chinese market, meaning their market share in the Chinese AI chip market will decline over time as they are forced to withdraw almost all of their offerings while Chinese firms gradually capture the remaining market.

The H20 and the upgraded H20E are already only marginally ahead of their Chinese competitors. Huawei's latest AI chip Ascend 910C delivers 2.6 times the computational performance of the H20, although it offers 20 percent less memory bandwidth, which is vital for the inference training and reasoning models that are a key part of modern AI. The H20's memory bandwidth, along with Nvidia's widely adopted software stack, a parallel computing platform and programming model that enables efficient GPU utilization for AI, high-performance computing, and scientific workloads, have been key differentiators driving demand from Chinese AI firms and keeping them competitive in the Chinese market. China acquired more than 1 million units of the H20 in 2024 and has been stockpiling the chip in response to looming concerns about controls since early 2025. Huawei's 910C is in mass production, with units already delivered to customers and broader mass shipments reportedly starting in May. Most recently, Huawei is reportedly approaching customers about testing its enhanced version of the 910-series GPU—the 910D, with its next-generation chip—the Ascend 920—expected to enter mass production in the second half of 2025. Notably, Huawei is just one of many Chinese firms poised to fill the gap left by U.S. suppliers, as Chinese AI chip companies such as Cambricon, Hygon, Enflame, Iluvatar CoreX, Biren, and Moore Threads are actively developing more competitive offerings.