SpaceX Adds 'Gun Range' and 'Spam' Clusters to Colossus 2

SpaceX is scaling its Colossus 2 AI campus with two new compute clusters — Gun Range and Spam — as Elon Musk targets roughly 1.2 million Nvidia Blackwell chips by year-end.

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SpaceX Adds 'Gun Range' and 'Spam' Clusters to Colossus 2

HAWTHORNE, Calif. — SpaceX is expanding its Colossus 2 artificial-intelligence campus with two new compute clusters that carry some of the most unusual names in the data-center world: "Gun Range" and "Spam." Elon Musk detailed both builds over the weekend, framing them as the next step in a buildout he says will reach roughly 1.2 million Nvidia Blackwell chips before the end of the year.

Two New Clusters, Two Jobs

Gun Range is a training cluster packed with about 220,000 Nvidia GB300 chips, wired with 800-gigabit networking to match the campus's existing Macroharder and Minihard builds. Musk said the cluster is "tracking to be operational by end of November," and explained that its name is entirely literal — it sits on land that once held "the local police department's gun range that we bought."

Spam, by contrast, is tuned for inference rather than training. Housed in a former Hormel building, it holds roughly 200,000 GB300 chips and, because inference needs simpler networking, requires less than half the fiber of the training clusters. Musk expects it online in December and joked, "I hope Spam doesn't produce too much spam!" The pairing reflects a deliberate split: train the next Grok models on the high-bandwidth clusters, then serve them at scale on the leaner inference hardware. The additions build on earlier work, after the company brought Colossus 2 online and doubled its training compute earlier this month.

Funding the Compute Race

Standing up hundreds of thousands of top-tier GPUs is capital-intensive, and SpaceX has moved aggressively to secure the hardware, reportedly lining up about $40 billion in GPU financing. Wall Street has read that as a firm signal of intent; analysts recently lifted their $SPCX targets as an Apollo-backed lease firmed up the compute bet. Musk said he walked the construction site around midnight and again the next morning, praising the pace set by SpaceX teams and contractors.

SpaceX Adds 'Gun Range' and 'Spam' Clusters to Colossus 2 — additional image

By Musk's own September roadmap, later phases could carry Colossus 2 to roughly 1.44 million chips by December if the schedule holds — a scale that would place it among the largest single concentrations of AI compute anywhere on Earth.

Reaching Beyond Earth

The weekend update also tied the ground buildout to a longer arc. Musk reiterated that SpaceX expects orbital compute to outpace terrestrial data centers by 2028, positioning the Colossus expansion as a bridge to space-based AI rather than an end point. Technical detail on the Grok models these clusters are built to train is published on xAI's own site.

For now, the message is one of momentum: two more clusters, hundreds of thousands of chips, and a timeline measured in weeks. If Gun Range lights up in November and Spam follows in December, SpaceX will close 2026 with one of the fastest compute ramps the industry has ever seen.

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