{"rewrite":{"id":"r_2ae2a8e81405023ae4930d21","clusterId":"c_fbd7ff1755b7a768f49e82b7","slug":"cxmt-plans-4f2-ddr5-rdimm-by-end-of-2026-sinking-samsung-and-sk-hynix-shares","model":"deepseek-v4-1-flash","headline":"CXMT Plans 4F2 DDR5 RDIMM by End of 2026, Sinking Samsung and SK Hynix Shares","summary":"CXMT says its first 4F2 architecture product will be a server DDR5 RDIMM due by the end of 2026. The vertical-transistor design cuts each memory cell's footprint by about one-third on paper and could fit 50% more cells. After the announcement, Samsung and SK hynix shares fell more than 7%, and Micron dropped about 4%. No speeds or capacities were disclosed.","whyItMatters":"CXMT is taking the 4F2 design straight into server DRAM rather than the consumer memory it has focused on, which is the first real pressure on the segment where Samsung, SK hynix, and Micron hold their margin.","webCardHtml":"\u003cp\u003eCXMT president Cao Kanyu cast the server DDR5 RDIMM as the first-generation product of the 4F2 line, a choice that points the company at the part of the market where overseas suppliers have been strongest. The company has filed more than 300 patents on the technology and published papers in 2021, 2023, and 2025. Samsung is developing its own vertical-transistor setup but has set a mass-production target of 2028, putting it two years behind CXMT on that timeline. Analysts quoted in the coverage caution that a 2026 mass-production start does not mean a stable line, and CXMT has not published speeds or capacities for the module.\u003c/p\u003e","blueskyPost":"CXMT announced no speeds or capacities for its 4F2 DDR5 RDIMM, so the stock move is pricing a paper density gain, not a shipping product. Samsung and SK Hynix fell more than the specs currently justify.","twitterPost":"CXMT disclosed no speeds or capacities for its 4F2 DDR5 RDIMM. The stock reaction trades on a cell-footprint claim, not a shipping part.","threadsPost":"CXMT's 4F2 DDR5 RDIMM announcement came with no speeds and no capacities, so what moved Samsung and SK Hynix shares is a paper density claim, about one-third smaller cells and 50% more fit. The market repriced on the architecture diagram, not a product sheet.","newsletterBlurb":"CXMT has named its first 4F2 product: a server DDR5 RDIMM due by the end of 2026. The architecture arranges transistors vertically and cuts each cell's area by about a third on paper. Samsung and SK hynix shares fell more than 7% on the news, with Micron down about 4%.","attributionJson":"[{\"source\":\"GIGAZINE\",\"url\":\"https://gigazine.net/news/20261014-cxmt-4f2-memory/\",\"title\":\"Chinese Memory Company CXMT Announces DDR5 RDIMM for Data Centers with 4F² Design to Launch by End of 2026, Achieving Breakthrough That Sends Rival Micron, SK hynix, and Samsung Stocks Plunging\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":4731,"outputTokens":674,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1791956249,"createdAt":"2026-10-14T05:33:27.000Z","publishedAt":"2026-10-14T05:36:12.000Z","updatedAt":"2026-10-14T05:36:12.000Z"},"cluster":{"id":"c_fbd7ff1755b7a768f49e82b7","canonicalTitle":"中国のメモリ企業「CXMT」が4F²設計のデータセンター向けDDR5 RDIMMを2026年末までに発売すると発表、ブレイクスルー達成でライバルのMicron・SKハイニックス・Samsung株が急落","representativeArticleId":"a_54e8934d06cfbb4f359e7c0d","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[],\"studios\":[\"CXMT\",\"Micron\",\"SK Hynix\",\"Samsung\"],\"people\":[],\"type\":\"business\",\"domain\":\"industry\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-10-14T04:20:00.000Z","lastSeenAt":"2026-10-14T04:20:00.000Z","updatedAt":"2026-10-14T05:36:08.000Z"},"attribution":[{"source":"GIGAZINE","url":"https://gigazine.net/news/20261014-cxmt-4f2-memory/","title":"中国のメモリ企業「CXMT」が4F²設計のデータセンター向けDDR5 RDIMMを2026年末までに発売すると発表、ブレイクスルー達成でライバルのMicron・SKハイニックス・Samsung株が急落"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":[],"studios":["CXMT","Micron","SK Hynix","Samsung"],"people":[],"type":"business","domain":"industry","is_roundup":false},"keyFacts":null}