DeepSeek's DSec Sandbox Fleet Is ~320 EPYC 9655 Chips, 30,720 Cores
teortaxesTex · x · 2026-09-23
A follow-up correction: DeepSeek's DSec unit is roughly 320 EPYC 9655 chips (160 nodes x 2, 96 cores each) = 30,720 cores. At peak that's 12.6 concurrent sandboxes per CPU core — an estimated 25-30% of max achievable CPU utilization (DeepSeek reports 41.4% transient peak), leading the author to argue even OpenAI couldn't do 4x better.
Related event: DeepSeek Sandbox Cluster Details Emerge, Estimated $20M Per Unit(3 posts)→
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