What is high bandwidth memory and why is the US trying to block China’s access to it?

The US government has imposed fresh export controls on the sale of high tech memory chips used in artificial intelligence (AI) applications to China. The rules apply to US-made high bandwidth memory (HBM) technology as well as foreign-produced ones. Here’s everything you need to know about these cutting-edge semiconductors, which have seen demand soar along with the global frenzy for AI.

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