xAI Colossus 1
AI data center in Memphis, Tennessee, operated by xAI (SpaceXAI, part of SpaceX since 2026).
xAI's first Memphis supercomputer, brought up in 2024. In May 2026 Anthropic agreed to use all of its capacity: more than 300 MW and over 220,000 GPUs.
Power: what each source says
Anthropic (2026-05-06): 'more than 300 MW' and over 220,000 NVIDIA GPUs, all of Colossus 1's capacity, online within the month. Epoch AI estimates 340 MW IT / 425 MW facility as of 2026-06-15.
Figures labelled Epoch AI are estimates from satellite imagery, permits and filings. Company figures come from the operator, owner or its filings. IT power is what the servers draw; in Epoch AI’s figures for these campuses it runs about 15–35% below total facility power.
Tenants
Anthropic
Campus facts
- Operator
- xAI (SpaceXAI, part of SpaceX since 2026) 1
- Owner / developer
- xAI / SpaceX 1
- City
- Memphis 1
- State / region
- Tennessee 1
- Country
- United States 1
- First power
- 2024 1
- Chips
- NVIDIA H100, H200, GB200 1
- GPUs / accelerators
- 220,000 1
- Cooling
- liquid 1
- Power source
- grid (MLGW) plus gas turbines (permitted July 2025, permit under appeal) 1
- Coordinates
- 35.06° N, 90.13° W (town level)
- Verified
Sources
- Anthropic: higher limits with SpaceX compute (2026-05) accessed 2026-11-09
- WSJ: profile of the Colossus data centers accessed 2026-11-09
- Epoch AI, AI data centers dataset (CC-BY 4.0, updated 2026-11-06) (licence: CC BY 4.0) accessed 2026-11-09