Longsys reaches 7.67% DRAM share as China’s fourth memory player, but HBM remains the hard wall

量子位 · wechat · 2026-07-26

Longsys’ challenge to the global memory top 3 is real, but the race is just beginning

The article argues that Longsys has moved from a follower to a true challenger in the highly concentrated DRAM market.

• By the end of 2025Q4, Longsys’ DRAM revenue share reportedly reached 7.67%, making it a clear No. 4 player globally.
• The company’s valuation of about $85.5 billion is still far below Samsung, Micron, and SK hynix, but its emergence as a mainland China contender is itself a structural shift.
• Its biggest bottleneck remains capacity: the three incumbents still have much larger 12-inch-equivalent monthly wafer starts, though they are prioritizing HBM and high-end memory.
• Longsys has already covered DDR5 and LPDDR5/5X, showing it is closing the gap in mainstream DRAM generations.
• HBM is described as the next hard hurdle, requiring not just chip design, but advanced packaging, customer qualification, and ecosystem coordination.
• The article concludes that the company’s long-term upside depends on a virtuous cycle across capacity, technology, customers, and domestic substitution, with phones, PCs, servers, and autos each playing a different role.

Original post →

More from Infra

• POCKET-35B claims 59 tok/s on CPU and runs locally on phones without a GPU — Powerful_Evening5495 · 2026-07-26
• Combined MCP server adds Redshift querying and S3 Markdown semantic search — modelcontextprotocol · 2026-07-26
• GitHub paid $100,000 for a critical bug in its internal Git infrastructure — sharpeye_wnl · 2026-07-26
• Is a 64GB M4 Max MacBook Pro the best value for running local models? — guyastronomer · 2026-07-26
• Developer says $5 a month bought 339.8 hours of agent sandbox compute — aniketmaurya · 2026-07-26
• D-Propulse previews an air-breathing rotating detonation engine with aerospike nozzle — Paimaamu · 2026-07-26

Infra channel →