{"rewrite":{"id":"r_19b7a0c6670b8bd388ad4489","clusterId":"c_885308468fd4d2030a642639","slug":"comma-ai-ships-chestnut-egpu-dock-to-run-larger-driving-models","model":"deepseek-v4-flash:free","headline":"Comma.ai Ships Chestnut eGPU Dock to Run Larger Driving Models","summary":"Comma.ai released Chestnut, an eGPU dock that connects a desktop GPU to the comma four onboard computer. The dock raises the power limit from about 10W to 100W, allowing openpilot to run larger AI models. The dock-only version is $249, and a bundle with an AMD Radeon RX 9060 is $799.","whyItMatters":"Chestnut lets the comma four run a new class of openpilot models with 30 times the parameters and 100 times the FLOPs, which Comma.ai expects will accelerate development speed.","webCardHtml":"\u003cp\u003eThe dock is installed in the passenger footwell or under the passenger seat, with a cable routed to the comma four and a connection to the car\u0026#39;s 12V power supply. The first model in the new Chestnut-class series ships in openpilot 0.11.2, and Comma.ai said its development team will focus on maximizing the performance of this class of models.\u003c/p\u003e\u003cp\u003eComma.ai expects the combination of comma four and Chestnut to provide computing power comparable to Tesla\u0026#39;s HW4 platform. The dock-only \u0026#39;tiny chestnut\u0026#39; costs $249, while the \u0026#39;Chestnut ready to drive\u0026#39; bundle with an AMD Radeon RX 9060 8GB, cables, and mounting hardware costs $799. The C language source code for the Chestnut controller firmware has been released on GitHub.\u003c/p\u003e","blueskyPost":"Comma.ai released Chestnut, an eGPU dock for the comma four that lifts the power limit from ~10W to ~100W. It runs the new Chestnut-class openpilot models. $249 dock-only, $799 with an RX 9060.","twitterPost":"Comma.ai's Chestnut eGPU dock connects a desktop GPU to the comma four, raising the power limit to ~100W for larger openpilot models. $249 bare, $799 with an RX 9060.","threadsPost":null,"newsletterBlurb":"Comma.ai released Chestnut, an eGPU dock that lets the comma four run larger openpilot models by raising the power limit from about 10W to 100W. The dock-only version is $249, and a bundle with an AMD Radeon RX 9060 is $799.","attributionJson":"[{\"source\":\"GIGAZINE\",\"url\":\"https://gigazine.net/news/20260819-egpu-dock-chestnut/\",\"title\":\"Comma.ai Releases 'Chestnut,' an eGPU Dock to Boost Driving Assistance Devices with GPU Power\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":4712,"outputTokens":601,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1787100827,"createdAt":"2026-08-19T00:39:01.000Z","publishedAt":"2026-08-19T00:46:44.000Z","updatedAt":"2026-08-19T00:39:01.000Z"},"cluster":{"id":"c_885308468fd4d2030a642639","canonicalTitle":"車に運転支援機能を追加できるデバイスをGPUで強化するためのeGPUドック「Chestnut」をComma.aiがリリース","representativeArticleId":"a_042f7633f73a7f97e5cb8bb4","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"Chestnut\"],\"studios\":[\"Comma.ai\"],\"people\":[\"ジョージ・ホッツ\"],\"type\":\"announcement\",\"domain\":\"other\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-08-18T22:00:00.000Z","lastSeenAt":"2026-08-18T22:00:00.000Z","updatedAt":"2026-08-19T00:46:45.000Z"},"attribution":[{"source":"GIGAZINE","url":"https://gigazine.net/news/20260819-egpu-dock-chestnut/","title":"車に運転支援機能を追加できるデバイスをGPUで強化するためのeGPUドック「Chestnut」をComma.aiがリリース"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["Chestnut"],"studios":["Comma.ai"],"people":["ジョージ・ホッツ"],"type":"announcement","domain":"other","is_roundup":false},"keyFacts":null}