Damnang
· Damnang’s Substack
· April 11, 2026 at 22:54
· ⏱ 13 min read
| Read on Substack ↗
Summary
CXMT, China's largest DRAM maker, is rapidly scaling production and gaining commodity DRAM market share despite technology gaps, particularly in LPDDR5X (30% of Chinese smartphone market) and DDR5 (shipping in Lenovo laptops). The article argues that while the Big 3 (Samsung, SK hynix, Micron) focus on HBM, CXMT fills the resulting supply gaps, and 3D DRAM could reshuffle the competitive landscape. For markets, this means increasing pressure on incumbent memory makers and potential supply chain shifts for OEMs.
•CXMT's quarterly wafer output reached ~720,000 wafers by end-2025, making it the fourth-largest DRAM producer by capacity, with a target IPO valuation of $42 billion.
•CXMT holds roughly 30% of China's smartphone LPDDR market (LPDDR5X) and has shipped DDR5 in Lenovo ThinkBook 2026 models, though its DDR5 die is ~40% larger than Samsung's, indicating higher costs.
•The company cannot access EUV lithography due to US export controls and relies on DUV multi-patterning, achieving a 16nm-class G4 node (5–6 year gap vs Big 3).
•The Big 3 are shifting wafer capacity to HBM, tightening commodity DRAM supply, creating an opening for CXMT to fill with volume shipments.
•Global OEMs like HP, Dell, Acer, and Asus have reportedly explored qualifying CXMT DRAM, suggesting growing acceptance beyond China.
•CXMT posted a ~2.3 billion yuan loss in H1 2025 despite surging revenue, with breakeven projected for 2026; massive capex ($6-7B in 2023-24) and new fabs signal long-term ambition.
The article reports that Lenovo has incorporated CXMT DDR5 in its ThinkBook 2026 series. As a major PC OEM, Lenovo benefits from an additional DRAM supplier, potentially lowering costs and improving s
The article reports that Lenovo has incorporated CXMT DDR5 in its ThinkBook 2026 series. As a major PC OEM, Lenovo benefits from an additional DRAM supplier, potentially lowering costs and improving supply chain resilience amid US-China tensions.
Risk: If CXMT memory has quality issues (e.g., high-temperature stability), Lenovo could face reputational or return costs; limited to China-centric models so far.
The article argues that CXMT is gaining commodity DRAM volume (LPDDR5X, DDR5) while the Big 3 (including Micron) concentrate on HBM, leaving supply gaps. CXMT's capacity share already reaches low teen
The article argues that CXMT is gaining commodity DRAM volume (LPDDR5X, DDR5) while the Big 3 (including Micron) concentrate on HBM, leaving supply gaps. CXMT's capacity share already reaches low teens, and if its technology and yield improve, it could erode Micron's commodity DRAM market share and pricing power.
Risk: CXMT's cost disadvantage and yield issues may limit near-term impact; Micron's HBM ramp could offset commodity weakness.