DeepSeek DSec cluster BoM estimated at ≤$20M; $1B could buy 50 clusters and 19M concurrent sandboxes
teortaxesTex · x · 2026-09-23
X user teortaxesTex estimates the economics of DeepSeek's DSec unit: a single cluster's bill of materials is ≤$20M, mainly driven by DRAM prices, so $1B could theoretically deploy 50 clusters.
Key numbers:
- 19 million concurrent sandboxes, 150 million sandboxes per day, trillions of tokens in any plausible scenario
- Each DSec unit is large: 384 EPYC 9655 chips
- Utilization: peak 12.6 concurrent sandboxes per CPU core, about 25-30% of max achievable (reported transient peak 41.4%), suggesting even OpenAI couldn't do 4x better
At this cost structure, scaled-up RL at trillions of tokens becomes plausible.
Related event: DeepSeek Sandbox Cluster Details Emerge, Estimated $20M Per Unit(3 posts)→
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