Microsoft SAT40

Compute capacity

64.7K H100e

IT power

75 MW

Capital cost

$2.8B

Microsoft SAT40 is an AI data center operated by Microsoft, located in the United States (15000 Lambda Drive, San Antonio, TX 78245).

The site holds roughly 64,679 H100-equivalents of AI compute. It draws about 75 MW of power. Building and equipping it represents an estimated $2.8B of capital in 2025 dollars. It currently runs H100, B300.

These figures are modelled estimates, not disclosures: Epoch AI derives them from permits, satellite imagery and reported spending, with an uncertainty of roughly 1.4x to 1.6x depending on the metric.

Timeline

Compute (H100e): 0 (2018-12-28) → 64.7K (2026-02-04)

Full record

Owner: Microsoft
Ownership confidence: Confident
Country: United States
Location: 15000 Lambda Drive, San Antonio, TX 78245
H100 equivalents: 64,679
Power: 75 MW
Total capital cost: $2.8B
Current chips: H100, B300
All chips: H100, B300