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What Is CXMT? China's DRAM Manufacturer Explained

CXMT is the largest DRAM maker in China, now the number four global supplier, closing in on Micron on capacity while its HBM chips stay years behind.

By Capital & Compute

CXMT, ChangXin Memory Technologies, is the largest DRAM chipmaker in mainland China and, as of 2025, the fourth-largest DRAM supplier in the world, holding roughly 7.7% of the global market. It makes commodity memory: DDR4, DDR5, LPDDR5, and LPDDR5X, the chips that go into laptops, phones, and servers. Not the exotic HBM stacks that go into AI accelerators. That distinction matters, and most coverage of the company skips it.

Here’s why a Hefei chipmaker almost nobody outside the industry had heard of a year ago belongs on a site that tracks RAM prices. The DDR4 spot price this site tracks hit $37.14 a chip in the first week of July 2026, up from about $12 in November 2025, per TrendForce. CXMT’s fabs are one of the only forces on the supply side large enough to eventually push that number back down, which is exactly why its ramp is worth understanding on its own terms before asking whether it actually will.

Who actually built this

CXMT was founded in 2016 in Hefei, the capital of Anhui province, a city China has spent a decade turning into a semiconductor and battery manufacturing hub. Its founder, Zhu Yiming, has the kind of resume that keeps showing up in this industry’s origin stories: a physics degree from Tsinghua in 1994, a stretch in Silicon Valley at memory-chip firm MoSys, then a return to China in 2005 with a portfolio of SRAM patents that became the seed for GigaDevice Semiconductor, the company he founded before CXMT, per a Reuters explainer syndicated in mid-July 2026.

CXMT isn’t a pure private venture. Pre-IPO ownership includes roughly 36% held by state-linked investors, among them Anhui’s provincial investment arm and China’s National Integrated Circuit Industry Investment Fund, the so-called Big Fund that has bankrolled much of the country’s chip self-sufficiency push. That state backing is worth naming plainly. It’s the reason CXMT could keep building fabs through years of losses that would have sunk an ordinary private startup.

How big CXMT actually is right now

The market-share number is consistent across outlets: about 7.7% of global DRAM in 2025, enough to make CXMT the fourth-largest supplier behind Samsung, SK Hynix, and Micron. It’s also, by a wide margin, the only Chinese company shipping modern DDR5, LPDDR5, and LPDDR5X at real volume, which is a different claim than “makes some memory chips.” Most of what China previously sourced domestically was older DDR4-class product.

The capacity trajectory is where the sourcing gets genuinely messy, and it’s worth showing both versions rather than picking one. SemiAnalysis’s independent modeling, published in a June 2026 newsletter, puts CXMT at around 265,000 wafer starts per month at the end of 2025, climbing to roughly 350,000 by the end of 2026 (within striking distance of Micron’s modeled ~385,000), then 420,000 by the end of 2027 (about 17% of global capacity) and 500,000 by the end of 2028.

CXMT modeled wafer capacity, 2025-2028SemiAnalysis modeled CXMT DRAM wafer capacity in thousand wafer starts per month: roughly 265 at end of 2025, 350 at end of 2026, 420 at end of 2027, and 500 at end of 2028.0k100k200k300k400k500kDec 2025Dec 2026Dec 2027Dec 2028CXMT capacity (kwspm)500k
CXMT modeled wafer capacity, 2025-2028
DateCXMT capacity (kwspm)
2025-12-31265k
2026-12-31350k
2027-12-31420k
2028-12-31500k
CXMT's modeled DRAM wafer capacity, in thousand wafer starts per month (kwspm), 2025-2028. Independent research-firm estimate, not a company-disclosed figure.Source: SemiAnalysis, 'China's CXMT Is Set to Challenge DRAM Incumbents' (June 23, 2026)

A different set of numbers, sourced by Reuters around the same time in reporting on a CXMT supply deal, describes the present tense rather than a multi-year model: roughly 300,000 wafers a month running today across two Hefei fabs and one in Beijing, with a new Shanghai facility under construction that would roughly double total output toward 600,000 wafers a month once it ramps. Neither figure is wrong. They come from different methods (an analyst’s multi-year model versus a snapshot tied to a specific announcement) and it’s more honest to show the gap than to average it away.

The revenue swing, and why it isn’t really about technology

+719%
Q1 2026 revenue growth
50.8 billion yuan, year over year
7.7%
Global DRAM share
world's #4 supplier, 2025
-113% → +38%
Modeled margin swing
FY2023 to FY2025, per SemiAnalysis
~$2.9B
Reported Tencent supply deal
multi-year server DRAM contract

CXMT’s Q1 2026 revenue came in at 50.8 billion yuan (roughly $7.3-7.5 billion depending on the exchange rate an outlet used), up about 719% from the same quarter a year earlier. It swung from an operating loss in the prior-year period to a large profit; the exact profit figure varies by outlet (different Chinese financial press and wire reports put it anywhere from roughly 25 to 35 billion yuan, likely a mix of operating profit and net profit being reported loosely as the same thing), so treat the precise number as approximate rather than settled.

SemiAnalysis’s own modeling tells a cleaner story about the driver: CXMT’s blended margin moved from about -113% in FY2023 to roughly +38% in FY2025. That’s not a company that suddenly got better at making chips. It’s a company that was selling into a market with almost no pricing power, and is now selling into the sharpest DRAM shortage in years. Its Q1 2026 gross margin, modeled at 70%-plus, is close behind Samsung’s 81%, SK Hynix’s 73%, and Micron’s 84%, a gap that’s mostly explained by product mix (the majors sell more server DRAM and HBM, which carry higher margins per gigabyte) rather than a manufacturing edge CXMT has closed.

The customer list backs up that this isn’t just a domestic story anymore. Reuters reported, citing sources, that CXMT signed a long-term DRAM supply agreement with Tencent worth more than 20 billion yuan (about $2.9 billion), covering several years of server memory. Separately, CXMT-made chips have reportedly turned up in retail Corsair DDR5 modules, according to trade press coverage, meaning its output is already reaching Western consumer shelves, not staying inside a closed domestic supply chain the way most coverage still assumes.

Why this isn’t an AI chip story, not yet

This is the detail that separates CXMT from the AI-chip story most readers already know. The Chinese AI accelerator makers covered here previously, Huawei’s Ascend line chief among them, are memory-bottlenecked: the binding constraint on their next-generation parts is high-bandwidth memory, not logic. CXMT is the obvious domestic candidate to fix that, and it isn’t there yet. Its strategy so far has been the opposite of urgent: keep pouring capacity into conventional DDR5 and LPDDR5X, where the shortage-driven margins are excellent right now, and develop HBM on the side rather than racing it. That’s a rational bet for a company still finding its footing, and a genuinely different one from the AI-memory arms race Samsung, SK Hynix, and Micron are already fighting.

The IPO

CXMT is preparing to raise at least 57.9 billion yuan, about $8.6 billion, in an initial public offering on Shanghai’s STAR Market, potentially rising to 66.6 billion yuan with over-allotment options. Reuters described it as poised to be Asia’s largest share sale so far in 2026. For Beijing, the listing is being read as a test case: whether a domestic memory champion, built with heavy state investment over a decade of losses, can now stand on its own in public markets. For CXMT itself, it’s simpler: capital to fund the Shanghai fab and the capacity race described above.

Is CXMT sanctioned?

The honest answer is that CXMT’s export-control status is more contested than most summaries let on, and it’s worth separating what’s settled from what isn’t.

Settled: since October 2022, US export control rules from the Bureau of Industry and Security have required a license to export semiconductor manufacturing equipment capable of producing DRAM at an 18-nanometer half-pitch or below to any facility in China, a threshold CXMT’s advanced fabs sit squarely inside. That rule is why CXMT’s most advanced-node ambitions depend on equipment it can’t freely buy from Western toolmakers.

Contested: Reuters reporting describes CXMT as designated a “Chinese military company” under the US National Defense Authorization Act’s Section 1260H list, a designation that creates real compliance friction for Western firms considering it as a supplier. Whether CXMT sits on the separate, more consequential BIS Entity List, the one that carries hard licensing bans rather than a compliance flag, is reported inconsistently across outlets as of mid-2026. Treat that specific question as open rather than settled either way.

The stakes of that ambiguity are concrete, not academic. Fortune, citing Financial Times reporting from late June 2026, reported that Apple has sought US government approval to source memory from CXMT despite the company’s contested sanctions status, a direct response to the same shortage driving up the DDR4 spot price this site tracks. A company whose Western customer status is genuinely unresolved is, at the same time, being lobbied for by Apple. Both things are true, and neither cancels the other out.

The bottom line

CXMT is real, growing fast, and increasingly hard to wave off as a state-subsidized also-ran. It is not, at least not yet, a fix for the AI memory bottleneck, and its recent profit surge says more about a shortage than about closing a technology gap with Samsung, SK Hynix, or Micron. What it clearly is: the largest new source of commodity DRAM capacity anywhere in the world right now, arriving in the middle of the shortage that’s driven RAM prices to multi-year highs. Whether that capacity actually lands fast enough, and clean enough on yield, to bend the curve on when RAM prices might actually drop is a separate question, and one worth its own answer rather than a guess tacked onto a company profile.

Frequently asked questions

What does CXMT stand for?
ChangXin Memory Technologies (长鑫存储), founded in 2016 and headquartered in Hefei, Anhui province. It is China's largest DRAM integrated device manufacturer and, as of 2025, the world's fourth-largest DRAM supplier by market share.
Is CXMT sanctioned by the United States?
Partly, and the details are genuinely unsettled. US export control rules since October 2022 require a license for advanced DRAM manufacturing equipment sold to China, which covers CXMT. Reuters reports CXMT has been designated a "Chinese military company" under the NDAA Section 1260H list, but its status on the separate, more consequential BIS Entity List is reported inconsistently across outlets as of mid-2026.
Does CXMT make HBM chips for AI accelerators?
Not at meaningful scale. SemiAnalysis models CXMT's HBM output at only about 5,000 wafers a month by the end of 2025, growing to roughly 30,000-55,000 through 2027, versus far larger, more mature HBM production at Samsung, SK Hynix, and Micron. CXMT is still working through basic HBM3 stability issues.
Is CXMT memory already in Western products?
Yes, in at least two documented ways. Reuters reported CXMT signed a multi-year DRAM supply deal with Tencent worth over 20 billion yuan (about $2.9 billion), and trade press has reported CXMT chips turning up in retail Corsair DDR5 memory modules sold in Western markets.

Sources

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