AI · ReviewedindustryAI-rewritten · Llama 3.1 (70B)
xAI's Colossus 2: World's First Gigawatt Datacenter
AI-generated summary based on Semianalysis · Aggregated by OffScreenSpace · Human-reviewed and approved on May 29, 2026
Key points
- Colossus 2 will be the world's first gigawatt datacenter
- xAI built Colossus 1 in just 122 days
- Colossus 1 has roughly 200,000 H100/H200s and ~30,000 GB200 NVL72
xAI is building Colossus 2, a datacenter that will be the first in the world to reach a capacity of one gigawatt. This follows the success of Colossus 1, which was completed in just 122 days and remains the largest fully operational single-coherent cluster. Colossus 1 has roughly 200,000 H100/H200s and ~30,000 GB200 NVL72, but its capacity is limited to around 300 MW.
Read the original story: Semianalysis