--- title: "CXMT targets 4F² DRAM years ahead of Samsung, and NAURA collects the tool bill" description: "CXMT says DDR5 server modules built on a 4F² cell ship by year-end; Samsung is not expected to sell the design before 2028. Export rules and Beijing's domestic quota steer the tool bill toward NAURA, though no supply contract between the two is disclosed, and its October 30 results test whether the ramp turns into profit." publisher: "The Inference" section: "Silicon" published: 2026-10-15T14:10:52.300Z modified: 2026-10-15T14:10:52.300Z canonical: https://theinference.org/article/cxmt-targets-4f2-dram-years-ahead-of-samsung-and-naura-collects-the-tool-bill language: en keywords: "Semiconductors, Memory, China, Export Controls, DRAM" --- # CXMT targets 4F² DRAM years ahead of Samsung, and NAURA collects the tool bill > CXMT says DDR5 server modules built on a 4F² cell ship by year-end; Samsung is not expected to sell the design before 2028. Export rules and Beijing's domestic quota steer the tool bill toward NAURA, though no supply contract between the two is disclosed, and its October 30 results test whether the ramp turns into profit. ChangXin Memory Technologies, the Chinese memory maker known as [CXMT](https://theinference.org/markets/companies/cxmt) and now fourth in world DRAM revenue, [unveiled a 4F² memory cell on October 10](https://www.trendforce.com/news/2026/10/12/news-cxmt-accelerates-4f%c2%b2-dram-push-eyes-year-end-server-ddr5-rdimm-launch/) and says the first DDR5 server modules built on it ship by year-end [1]. [Samsung Electronics](https://theinference.org/markets/companies/samsung), the world's largest memory maker, is not expected to sell the same cell design before 2028 [1]. The new cell adds etch and bonding steps to every wafer, and two sets of rules point the tool bill at [NAURA](https://theinference.org/markets/companies/naura-technology-group), China's largest chip-equipment maker [2][5]. *Chart: **CXMT's DRAM revenue share hit 9.5% in 2Q26, up from 7.6% a quarter earlier** Column chart of second-quarter 2026 global DRAM revenue share: Samsung 39.4%, SK hynix 24.9%, Micron 23.3%, CXMT 9.5%.* *Share of global DRAM revenue by maker, second quarter 2026. Source: TrendForce. [1]* ## A smaller cell means more etch and deposition work A DRAM cell today occupies 6F², six times the square of the smallest feature a fab can print; the 4F² design cuts that footprint to four and lifts memory density by 30–50% [1]. The transistor stands upright, its gate wrapped around a silicon pillar, and the dense memory array is built on a separate wafer from the chip's logic, then bonded [1]. CXMT is scaling from about 290,000 wafer starts a month, blank silicon wafers begun, toward 350,000 by year-end, and every wafer carries more etch and deposition work than the generation before [2]. ## Export rules and Beijing's quota steer CXMT's tool spend to domestic makers [US export rules bar tool sales for DRAM at or below an 18-nanometre half-pitch](https://www.aol.com/articles/applied-materials-china-problem-getting-164207000.html), the spacing of the smallest repeated features on a chip [2]. CXMT's current G4 process runs near 16 nanometres, inside the restricted band, which keeps the US toolmakers [Applied Materials](https://theinference.org/markets/companies/applied-materials) and [Lam Research](https://theinference.org/markets/companies/lam-research) out of its advanced lines [2]. Beijing adds its own rule: new fab capacity must draw at least half its equipment from domestic makers, or the project is denied approval [2]. No supply contract between CXMT and NAURA is disclosed; the link runs from those rules and from penetration estimates, which put domestic tools at 40–50% of CXMT's installed base and above 60% in etch, NAURA's strongest segment [2]. Applied Materials guides to a $600 million export-control headwind this fiscal year, while NAURA, now the world's fifth-largest equipment maker, holds the listed claim on the spending US firms cannot take [2][5]. ## Seoul repriced the server-memory market in two days South Korea's stock index, the KOSPI, [fell 3.5% on the first trading day after the announcement](https://uk.finance.yahoo.com/news/asia-stocks-mixed-oil-retreats-035535247.html), with [SK Hynix](https://theinference.org/markets/companies/sk-hynix), the world's second-largest memory maker, down 2.6% and Samsung 2.3% [3]. The next session, October 13, was the index's worst of 2026: SK Hynix lost a tenth of its value, Samsung fell 7.4%, and [foreign funds pulled $3.38 billion out of Seoul in a day](https://www.msn.com/en-us/money/technology/china-s-cxmt-claims-next-gen-dram-lead-seoul-plunges-korea-keeps-hbm-moat/ar-AA2ednS7) [4]. *Chart: **Day two of the selloff tripled day one's losses for Korea's memory makers** Grouped column chart: after CXMT's 4F2 announcement the KOSPI fell 3.5% on day one, with SK Hynix down 2.6% and Samsung down 2.3%; on October 13 SK Hynix fell about 10% and Samsung fell 7.4%.* *One-day price change around CXMT's 4F² announcement; SK Hynix's October 13 drop is the 'tenth of its value' reported by Tech Times, and the session was the KOSPI's worst of 2026. Sources: Yahoo Finance UK; Tech Times via MSN. [3][4]* ## The order book has not reached the profit line NAURA's first half shows the lag between tools shipped and profit booked. Revenue grew about 25%, profit 5%, with research spending absorbing the difference [5][6]. Nomura, the Japanese brokerage, [started the stock at Buy on October 8 with a 900-yuan target](https://www.marketscreener.com/news/nomura-starts-naura-technology-group-at-buy-with-900-yuan-price-target-ce785dded088f226); the shares [closed at 591 yuan on October 13](https://nl.marketscreener.com/koers/aandeel/NAURA-TECHNOLOGY-GROUP-CO-6970734/nieuws/NAURA-Technology-Group-Co-Ltd-Nomura-bevestigt-koopadvies-54449340/) [6][7]. The third-quarter report due October 30 is the first reading on whether CXMT's ramp arrives as margin rather than research spend [7]. NAURA is also building the next product hop. It has [demonstrated a selective etch process on a 64-layer 3D DRAM stack](https://www.digitimes.com/tag/naura_technology/0019797.html), work DIGITIMES calls CXMT's path around extreme-ultraviolet lithography, the printing technology behind leading-edge chips [5][8]. *Chart: **NAURA's sales growth is outrunning its profit growth** Grouped columns: NAURA revenue growth 26% in Q1 2026 and 25% in H1 2026, against net profit growth of 3.4% and 5%.* *Year-on-year growth as reported, 2026. Sources: DIGITIMES; MarketScreener/MT Newswires. [5][6]* ## Korea's remaining lead is in stacked AI memory Analysts put CXMT three to five years behind in high-bandwidth memory, the stacked chips that sit beside the AI accelerators [Nvidia](https://theinference.org/markets/companies/nvidia) sells, where the hard problems are stacking yield and bonding quality [4]. Samsung and SK Hynix keep that premium business. [The commodity server-memory franchise](https://theinference.org/article/cxmt-says-server-dram-ships-in-2026-two-years-ahead-of-samsung-landing-on-micron-s-87-margin) is what Seoul just repriced. NAURA's work is turning a designed cell into wafers a fab can run at volume, and that is where the money in this story sits. The first evidence on whether it earns a margin lands on October 30 [7]. ## Takeaway CXMT's 4F² cell puts its DDR5 server modules about two years ahead of Samsung's, and export rules plus Beijing's domestic quota route the extra etch and deposition work to NAURA. No supply contract is disclosed, and NAURA's October 30 results show whether the volume becomes margin. ## Sources 1. [TrendForce News, CXMT Accelerates 4F² DRAM Push, Eyes Year-End Server DDR5 RDIMM Launch, 12 October 2026](https://www.trendforce.com/news/2026/10/12/news-cxmt-accelerates-4f%c2%b2-dram-push-eyes-year-end-server-ddr5-rdimm-launch/) 2. [AOL / 24/7 Wall St (Dr. Robert Castellano), Applied Materials' China Problem Is Getting Worse, 26 August 2026](https://www.aol.com/articles/applied-materials-china-problem-getting-164207000.html) 3. [Yahoo Finance UK (Investing.com, Roushni Nair), Asia stocks mixed as Korean chipmakers slide on CXMT threat, 12 October 2026](https://uk.finance.yahoo.com/news/asia-stocks-mixed-oil-retreats-035535247.html) 4. [Tech Times via MSN (Scott McCain), China's CXMT claims next-gen DRAM lead; Seoul plunges, Korea keeps HBM moat, 14 October 2026](https://www.msn.com/en-us/money/technology/china-s-cxmt-claims-next-gen-dram-lead-seoul-plunges-korea-keeps-hbm-moat/ar-AA2ednS7) 5. [DIGITIMES, News tagged Naura Technology (incl. Naura 3D DRAM etching breakthrough could give CXMT a new path beyond EUV, 7 September 2026; Naura posts 25% revenue growth but R&D and margins squeeze profit, 26 August 2026; Naura rises to No. 5 in global semiconductor equipment rankings, 13 February 2026), accessed 15 October 2026](https://www.digitimes.com/tag/naura_technology/0019797.html) 6. [MarketScreener / MT Newswires, Nomura Starts Naura Technology Group at Buy With 900 Yuan Price Target, 8 October 2026](https://www.marketscreener.com/news/nomura-starts-naura-technology-group-at-buy-with-900-yuan-price-target-ce785dded088f226) 7. [MarketScreener NL / MT Newswires, NAURA Technology Group Co., Ltd. : Nomura bevestigt koopadvies, 8 October 2026 (carries the 13 October close of 591.00 CNY)](https://nl.marketscreener.com/koers/aandeel/NAURA-TECHNOLOGY-GROUP-CO-6970734/nieuws/NAURA-Technology-Group-Co-Ltd-Nomura-bevestigt-koopadvies-54449340/) 8. [Wccftech (Ramish), Musk Says SpaceX Is The Only Anomaly Beating China's Mass Production Machine, And RAM Chips Could Be Next, October 2026](https://wccftech.com/musk-says-spacex-is-the-only-anomaly-beating-chinas-mass-production-machine-and-ram-chips-could-be-next/) --- CXMT targets 4F² DRAM years ahead of Samsung, and NAURA collects the tool bill — The Inference. Canonical: https://theinference.org/article/cxmt-targets-4f2-dram-years-ahead-of-samsung-and-naura-collects-the-tool-bill