Work already underway to expand system to 200,000 Nvidia Hopper chips Unlike most AI training clusters, xAI's Colossus with its 100,000 Nvidia Hopper GPUs doesn't use InfiniBand. Instead, the massive system, which Nvidia bills as the "world's largest AI supercomputer," was built using the GPU giant's Spectrum-X Ethernet fabric....

Social media platform magically worth a billion more than what he bought it for Comment Billionaire Elon Musk's xAI is to acquire billionaire Elon Musk's X in a deal that values the former at $80 billion and the latter at $33 billion....

Newly completed substation will help bear the load Elon Musk's xAI is removing about half of the temporary gas-turbine generators powering its Colossus AI datacenter over the next two months, according to the Memphis Chamber of Commerce, not due to environmental concerns, but because a new nearby substation now supplies the needed power....