Smugglers Slip Banned AI Memory Into China Hidden Behind Cheap Server Chips

US export controls were supposed to wall China off from the best AI hardware. According to a report from Tom's Hardware, smugglers have found a workaround that leans on cheap server chips and a soldering station. High-bandwidth memory made by Samsung Electronics and SK hynix is reportedly being repackaged alongside low-end server processors and shipped toward China, with the processor acting as bait and the memory as the real prize.

The mechanics are almost insultingly simple. The HBM gets mounted on a substrate board, and that board is declared under the classification of the server processor traveling with it — not the memory. The paperwork describes the boring, unrestricted part of the box, while the valuable, restricted part rides along unmentioned. Shipments reportedly move from manufacturing hubs in Taiwan, South Korea and Southeast Asia to Hong Kong, then onward into mainland China. There, illicit workshops pull the HBM off the boards, toss the processors and sell the memory on.

The money explains the effort. HBM3E chips now go for roughly $4,000 each on the smuggling market, according to the report, up from a few hundred dollars a year ago. A typical AI chip package needs 6–8 HBM stacks, which puts the memory bill alone at $24,000–$32,000 per package at black-market rates.

The research findings point to Huawei's AI systems, including the Ascend 960DT, as the most prominent buyer category — and indicate Huawei has been steering clients toward smuggled HBM. For Huawei, that reliance cuts both ways: it can still assemble systems, but it's doing so with parts sourced through channels that are expensive and legally fraught.

The gap traces back to US export rules issued in June 2024, which evaluate a package based on the server processor rather than the HBM attached to it. The research findings describe the scheme as a way to duck regulations that take effect in December 2024 and aim to tighten control over the advanced memory AI runs on. Whether those rules actually close the processor-classification hole or just push smugglers toward the next trick is an open question.

Samsung and SK hynix both say they follow US export guidelines, and nothing in the findings suggests either company is involved in the smuggling. The problem is what happens to their products after they leave the factory floor. Enforcement also hinges on visibility at transit points, and with Hong Kong as a waypoint and hubs spread across Taiwan, South Korea and Southeast Asia, any real crackdown would need cooperation far beyond US borders.