Fab 21 Phase 1 (N4)
AI data center in Phoenix, AZ, United States: operational.
- Location: Phoenix, AZ, United States
- Developer: TSMC
- Status: operational
- Estimated cost: $12B
Fab 21 Phase 1 (N4) is a AI data center project located in Phoenix, AZ, United States, currently operational. It is being built by TSMC. The estimated build cost is $12B. This project is one of thousands of data-center facilities tracked by Data Center Index across AZ, United States, covering operational, under-construction, announced, and permitted sites.
Project description
TSMC's Fab 21 Phase 1 in Phoenix is operational and runs the N4 process. It's the first leading-edge US capacity from the foundry that makes nearly every AI accelerator.
Public companies linked to Fab 21 Phase 1 (N4)
Developers, tenants, and suppliers tracked by Data Center Index with exposure to this project:
- Taiwan Semiconductor Manufacturing (TSM), developer · chip fab
Related data center projects
- JASM Fab 1 (Kumamoto), Kumamoto, Japan, Japan · operational
- ESMC Dresden, Dresden, Germany, Germany · under construction
- Stratos Hyperscale Data Center, 9 GW, Snowville, UT, United States · announced
- PORTS-Pike Technology Campus, 8 GW, Piketon, OH, United States · under construction
- Nexus Hubbard Campus, 7.7 GW, Hubbard, TX, United States · under construction
- Meta Hyperion, 5 GW, Holly Ridge, LA, United States · under construction
- Data City Texas, 5 GW, Laredo, TX, United States · announced
- Creekstone Delta Gigasite, 4.6 GW, Delta, UT, United States · under construction
Frequently asked questions
- What is Fab 21 Phase 1 (N4)?
- Fab 21 Phase 1 (N4) is a semiconductor fab in Phoenix, Arizona tracked by Data Center Index. Its status is operational.
- Where is Fab 21 Phase 1 (N4)?
- Fab 21 Phase 1 (N4) is in Phoenix, Arizona. Every tracked Arizona campus, with counts and capacity, is at https://datacenterindex.ai/markets/arizona.
- Who is building Fab 21 Phase 1 (N4)?
- TSMC is developing Fab 21 Phase 1 (N4).
- Which public companies are linked to Fab 21 Phase 1 (N4)?
- Data Center Index links 1 tracked public company to Fab 21 Phase 1 (N4): Taiwan Semiconductor Manufacturing (TSM). Each is a developer, tenant or supplier with a sourced link to the project.
Sources
- Arizona Technology Council (republishing Tom's Hardware) (aztechcouncil.org · press · 2026-09-12)