Models Show Orbital Compute Beats Terrestrial Costs with Terafab ASICs
Detailed bottom-up modeling reveals orbital datacenters costing less per GW than ground ones ($24B/GW long-term vs escalating $80B+ terrestrial) thanks to Terafab's custom ASICs and Starship economics. Near-term off-shelf chips too expensive, but vertical integration flips parity by 2032. Ties into SpaceX IPO and space AI strategy.
Key facts
- Orbital: $46B/GW mid-term, below $50B Stargate
- Chip costs decisive variable post-Starship maturity
- Terrestrial costs compounding 7%/year
Long-term with full vertical integration and Terafab economics: orbital datacenter will trend below $24B/GW, while terrestrial benchmarks escalate past $80B
How the story unfolded
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- privatemarketsnews.substack.com Orbital Data Centers: Sci-Fi or the Next Cloud? The Terafab chip factory announced March 21 is designed to produce custom D3 radiation-hardened processors specifically for these orbital satellites — with 80% of Terafab’s production allocated to space applications.
- NEESHANT Elon Musk’s TERAFAB Why Elon Musk is Moving AI to Orbit (Terafab Explained)
- xpert.digital Orbit as the last resort in AI's energy crisis? Terafab: When an entrepreneur wants to reinvent the entire semiconductor industry The logic behind it is strikingly simple: Tesla needs chips for autonomous vehicles, for the humanoid robot Optimus, and for AI inference; SpaceX requires radiation-proof space chips for a planned orbital data center infrastructure; and xAI, according to Musk himself, will claim the majority of the total capacity. Since existing suppliers like TSMC and Micron Technology can no longer fully meet the steadily growing demand, Musk sees no other way: "We either build the Terafab or we don'
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- @SpacesFuture Post
- semiengineering.com Orbital Data Centers Are Souped-Up Satellites – For Now “Because AI installation and AI data centers outgrow the speed at which we can supply enough energy and resources on the ground, we want to go to space. We’ve seen the announcements from SpaceX about its Terafab to build their own chips, and Blue Origin’s TeraWave satellite network.
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- reddit.com r/stocks on Reddit: SPCX finally joined the Nasdaq-100. The first reaction was to sell it SpaceX itself claims that only 7% of their Total Addressable Market (TAM) is from space-related businesses. 93% of that TAM is from AI. The data centers in space is a pipe dream, maybe in 2040s or beyond. xAI is not a frontier lab. Grok is a 3rd rate LLM. They plan to build a Terafab but that won't come online for a decade.
- fasterplease.substack.com 🚀 Wall Street on SpaceX: 'Everything depends on Starship.' And they're right A caveat worth noting: The supposed cost advantage of building compute in orbit is an estimated $15–20 billion per gigawatt, versus $28–32 billion terrestrially. But that discount depends partly on the success of Terafab (the giant chipmaking project SpaceX plans with Tesla) to reduce reliance on Nvidia and other third-party suppliers.
- economictimes.indiatimes.com Forget rockets: Morgan Stanley sets $300 SpaceX target based on a secret AI weapon - The Economic Times On costs, they believe SpaceX can achieve “industry‑leading compute cost and time‑to‑power, first through terrestrial compute and vertical integration, and longer term through orbital compute as a meaningful driver of lower cost per watt.” A large portion of capex is directed towards Terafab, Solarfab and other vertical integration efforts, including blade/vane foundry and terrestrial communications infrastructure, to push infrastructure capex to roughly $4–$5 per watt (excluding chips), versus
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