TeraFab · AI5 · D3 · Starmind · Compute · 8 min read
Three Dies Under One Roof
Three dies became one roof.
Three dies became one roof.
Three dies became one roof. terafab.ai is the product page. It does not print a yield. It prints a roof, and the duties under it.
The roof
The heading on the page: a chip factory built for Earth and orbit. The next line: combining logic, memory, and advanced packaging all under one roof. The Updates post dated 6 August 2026 says the factory will house manufacturing, packaging, and testing of advanced logic and memory devices. One location. The site essay is already at /research/terafab-texas. This note stays with the dies.
Three names
AI5. Powering FSD and Tesla Optimus. AI6. Powering Tesla Optimus. D3. Powering space. The page adds one more mark: and beyond. AI5 is the car stack and the robot. AI6 is the robot. D3 is space. The page prints no node, no transistor count, no tape-out. A name is a product line. It is not a rack in orbit.
Three frames
Beside the scale, the page frames three machines. Tesla Optimus. AI1. Starship V3. A frame is not a wiring diagram. This note does not assign a die to a machine.
Scale, as printed
1 billion Tesla Optimus robots to do the work. 10 million tons of mass a year launched into orbit. 1 TW+ solar power needed. Printed targets. Not a yard count. Not mass already on orbit.
Two floors
Production at terawatt scale. Two floorplates. 10,000,000 square feet. Tesla Gigafactory, TX. 100,000,000 square feet. Terafab. Then two power lines, set side by side. Terafab output: 1 TW/Year. Current annual U.S. consumption: .5 TW. The page prints both. It does not print the ratio. This desk will not add one.
Two columns
Cost of compute on Earth. Power build. Permitting. Operating costs. Land. Energy costs. Infrastructure. Cooling. Cost of compute in space. Launch cost. Operating costs. Satellite build. Infrastructure. No dollars. Earth carries the build of power, the permit, the land, the energy, the cooling. Space carries launch and the satellite. Operating costs and infrastructure sit in both. That is the argument the plate will make.
Edge and high power
From 6 August 2026, the chip sentence. Chips for edge computing and inference, in hardware like Tesla's Optimus robots and self-driving Cybercabs. High-power chips for SpaceX's space-based data centers. The product page names Optimus on AI5 and AI6, and space on D3. It does not print the word Cybercab. The Updates page does. This note will not glue those labels into one part number.
The third limit
On the Starmind page the limits are three. Mass to orbit. Power generation. AI chips. AI chips is the third. Under it, SpaceX plans advanced AI chips at scale in a new fab, a joint project with Tesla. The block points at terafab.ai. The AI1 power table stays on Starmind. It is not copied here.
Not a wafer
No node. No yield. No tool vendor. No landing year. The billion, the tons, and the solar line are targets on a page. D3 powering space is a duty on that page. None of it is a machine already flown.
Selected primary sources
Terafab product page, https://terafab.ai/. Roof line; AI5, AI6, D3; frames Tesla Optimus, AI1, Starship V3; 1 billion Optimus; 10 million tons a year; 1 TW+ solar; 10,000,000 and 100,000,000 square feet; output 1 TW/Year beside U.S. consumption .5 TW; Earth and space cost columns. SpaceX Updates, Breaking Ground on Terafab in Texas, 6 August 2026, https://www.spacex.com/updates/terafab. Chip lines only: logic, memory, advanced packaging; edge and inference for Optimus and Cybercab; high-power chips for space-based data centers. SpaceX Starmind, https://www.spacex.com/spacexai/starmind. Third limit is AI chips. Fab is a joint project with Tesla. Research-only. Do not duplicate /research/terafab-texas or reprint the AI1 power table.
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