Nvidia plans to produce AI supercomputer chips entirely in the United States for the first time. The semiconductor maker said in a blog post Monday that it had commissioned more than 1 million square feet of manufacturing space to build and test its Blackwell chips in Phoenix and is building supercomputer plants in Houston and Dallas. Nvidia said it would take at least a year to reach mass production scale at both plants. At the same time, Nvidia said its Blackwell chips have already started production at Phoenix chip plants run by Taiwan Semiconductor Manufacturing Co., a major semiconductor foundry.