xAI is set to expand its Colossus supercomputer cluster in Memphis to 1 million GPUs.The current configuration of Colossus is powered by 200,000 Nvidia H100/H200 GPUs.The expansion aims to enhance the capabilities of xAI's large language model, Grok.xAI's market value has soared to $50 billion, and the company has raised $11 billion in 2024.