Data Center Atlas
xAI MACROHARDRR data center (Southaven)
Site records
Third xAI data center in the Memphis area, made by retrofitting a warehouse of roughly 800,000 square feet that xAI bought in late 2025 in Southaven, Mississippi, just south of Colossus 2 across the state line. Mississippi's governor announced it in January 2026 as an investment of more than $20 billion, the largest economic development project in state history, supported by a state sales and use tax exemption and local fee-in-lieu agreements. Musk said it would lift Colossus training compute to about 2 GW, and a July 2026 report relaying his comments said it holds 220,000 NVIDIA GB300 GPUs.
This record reports operational as of 2026-07-31. WMC Action News 5
Location: Southaven, DeSoto County, Mississippi, US. Center of the OpenStreetMap building tagged 'xAI Macrohardrr' on Stateline Road West, taken from this project's OpenStreetMap data center layer (no geocoder call), about 0.5 km south of the Colossus 2 building. This matches Cleanview's address of 2400 Stateline Road, Southaven, and WREG's description of the warehouse as just south of Colossus 2. Office of Governor Tate Reeves; WREG (via Yahoo News); Cleanview
Use: Ai training
Capacity, investment and other figures
| Measure | Value | Scope | As of | Notes | Sources |
|---|---|---|---|---|---|
| Investment | more than 20,000,000,000 USD | Announced · Campus | 2026-01-08 | Office of Governor Tate Reeves; WREG (via Yahoo News) | |
| Floor area | about 810,000 sq_ft | Under construction · Campus | 2026-01-08 | Size of the warehouse being retrofitted; Converge Digest and Cleanview give about 810,000 square feet and WREG gives 800,000. | Converge Digest; Cleanview; WREG (via Yahoo News) |
| Accelerators | 220,000 count | Installed · Campus | 2026-07-31 | Elon Musk's figure as relayed by WMC in July 2026; not confirmed in a company filing. No Colossus 2 figure is repeated here. | WMC Action News 5 |
Companies and organizations
| Name | Role | Notes | Sources |
|---|---|---|---|
| xAI | Developer | Office of Governor Tate Reeves; WREG (via Yahoo News) | |
| Mississippi Development Authority | Government | Approved the project for the state Data Center Incentive sales and use tax exemption. | Office of Governor Tate Reeves |
| City of Southaven | Government | Supports the project through a fee-in-lieu agreement. | Office of Governor Tate Reeves |
| DeSoto County | Government | Supports the project through a fee-in-lieu agreement. | Office of Governor Tate Reeves |
Timeline
| Date | Event | Actual or planned | Notes | Sources |
|---|---|---|---|---|
| 2025-12 | Site acquired | Actual | Musk disclosed the purchase of an 800,000-square-foot Southaven warehouse on December 30, 2025; the governor's release says xAI bought an existing building for the project. | WREG (via Yahoo News); Office of Governor Tate Reeves |
| 2026-01-08 | Announced | Actual | Office of Governor Tate Reeves; WREG (via Yahoo News) | |
| 2026-02 | First operational | Planned | Target stated at the January 2026 announcement; no source reviewed confirms the actual start date. | Office of Governor Tate Reeves; Converge Digest |
Status is inferred from a July 2026 WMC report that calls Macro-harder an existing site equipped with 220,000 GB300 GPUs, relaying Elon Musk; no source reviewed confirms when operations began. Converge Digest labels the building 'Colossus 2 (MACROHARDRR)', and analyst estimates for Colossus 2 (xai-colossus-2-memphis) may include it; no Colossus 2 figure is repeated here. The 2 GW figure in the announcements refers to xAI's combined Colossus compute, not this building alone.
Related projects: xai colossus memphis, xai colossus 2 memphis
Sources for these details
- Tech leader xAI investing more than $20 billion in Southaven — Office of Governor Tate Reeves; 2026-01-08
- xAI investing $20B in Southaven, Mississippi facility, governor says — WREG (via Yahoo News); 2026-01-08
- xAI Commits $20B to 2-GW AI Data Center in Mississippi — Converge Digest; 2026-01-08 · Archived source
- xAI announces fourth data center; turbines to be removed from Southaven site — WMC Action News 5; 2026-07-31
- Colossus 1 & 2 | Behind-the-Meter Data Centers — Cleanview; publication date not stated
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