A chip designer in South Korea has described a way to send export-controlled high-bandwidth memory (HBM) to China by attaching it to low-performing server processors. Tom’s Hardware reports that the account came from The Information. The person, described as a memory smuggler, owns a chip design firm that makes inexpensive processors.
The firm reportedly pairs those processors with HBM from Samsung and SK hynix. The memory chips, on their own, are banned from export to China, according to Tom’s Hardware. The reported method relies on exporting them as part of a larger product rather than shipping the memory by itself.
Why the processor matters
The account says the relevant U.S. and South Korean export rules assess a server processor’s performance, but not the performance or export status of the other components attached to it. In this case, the low-performing processor makes the assembled product eligible for export, even though it contains HBM that could not be shipped to China on its own.
That distinction is the reported loophole: a restriction aimed at a sensitive component may not stop its export when the finished product is assessed using the processor’s performance. It does not mean the HBM itself is no longer controlled. Rather, the reported approach puts restricted memory inside a product that the rules, as described, treat differently.
What is still unclear
The account describes a method, but Tom’s Hardware does not give the firm’s name, the number of shipments, or details of how officials classify the finished products. It also does not say how much HBM has reached China this way or whether the route has been challenged by regulators.
For businesses that track chip supply chains, the report points to a practical enforcement question: whether rules that focus on a processor can account for valuable components packaged alongside it. The report does not establish how common the practice is, or whether Chinese buyers can obtain these products in significant quantities.
Why it matters
For companies monitoring chip supply chains, the reported method suggests that checking a server’s processor alone may not reveal whether it contains restricted memory. The account does not show how many shipments have taken place or whether the approach is widespread.
