Inrersting, xAI’s Colossus 2 is now the first gigawatt‑scale AI training cluster, powered by 555,000 NVIDIA GPUs, roughly the electricity demand of San Francisco.
Built at extreme speed, it pushes toward 2 GW as the AI compute race accelerates. At this scale, 1 GW = power for ~750,000 UK homes.
Few are ready for the singularity.