Data Centers in Space: The Wrong Chip in the Right Place
Update,5 hours after I posted this. NVIDIA announced Space-1 Vera Rubin Module at GTC, alongside Jetson Orin and Jetson Thor for orbital deployment. Planet will fly Jetson Thor on its next-gen satellites. Jensen Huang said: “In space, there’s no convection, there’s just radiation — and so we have to figure out how to cool these systems.” He confirms the thesis I write below. The chips actually shipping to orbit — Jetson Orin (42 TFLOPS, 60W) and Jetson Thor (~517 FP16 TFLOPS, 130W) — land exactly on the inference sweet spot identified below. Space-1 Vera Rubin promises 25× the H100 but has no published TDP and no ship date. The datacenter version runs at 1,800–2,300W. Sophia Space describes its platforms as “passively cooled.” The chips that fly are inference-class, not training-class. NVIDIA just formalized the split that T⁴ demanded. I’ve updated the image with the new chips. ...