Samsung's 1c DRAM Yield Surpasses 80%, Enters Stable Production; HBM4 Yield Nears 60%

Samsung's 6th-generation (1c) 10nm-class DRAM has surpassed an 80% yield rate, signaling its entry into a stable mass production phase and significantly boosting its cost competitiveness.

This yield improvement also extends to the next-generation HBM4 memory, enhancing its production yields and strengthening Samsung's competitive edge in the AI semiconductor market.

Achieved amidst strong memory prices driven by server and AI demand, this milestone positions Samsung to secure both cost advantages and a stable supply capability.

Samsung Electronics' latest 1c DRAM has officially entered a stable production phase, with its manufacturing yield surpassing the crucial 80% mark.

This is a major milestone because yield is directly tied to cost and profitability. A higher yield means more good chips from a single wafer, which significantly lowers the cost of each chip. For instance, improving the yield from 70% to 80% cuts the per-unit cost by about 12.5%. In a market where prices for server memory like DDR5 are expected to remain strong, this cost improvement creates a powerful combination, potentially boosting the profitability of Samsung's entire memory business.

This news also comes at a critical time for Samsung. The company has been working hard to regain trust from major clients like NVIDIA. After receiving quality approval for its HBM3E memory in late 2025, Samsung guided for HBM4 deliveries to start in early 2026. Achieving a high yield on the foundational 1c DRAM process is essential to delivering on that promise. A stable, high-volume supply of HBM is key to securing orders for next-generation AI platforms, and this yield breakthrough is a strong signal that Samsung is on the right track.

Furthermore, Samsung is not just improving quality; it's also scaling up quantity. The company plans to more than triple its 1c DRAM production capacity at its Pyeongtaek P4 fab, from 60,000 wafers per month to 200,000. Reaching an 80% yield is the key that unlocks the "profitability of scale." With a stable process, Samsung can confidently ramp up production to meet the soaring demand from the AI and server markets.

This all fits into a larger narrative of a memory "supercycle" where strong prices and proven supply capabilities are paramount. With both DDR5 and HBM competing for production capacity, the ability to efficiently produce the foundational 1c DRAM is a massive advantage. This 80% yield milestone is significant not just for conventional DRAM but also for the next-generation HBM4, giving Samsung a critical lever to pull on both fronts simultaneously.

Yield: The percentage of functional, non-defective chips produced on a semiconductor wafer. A higher yield is crucial for profitability.
HBM (High Bandwidth Memory): A high-performance memory standard that involves vertically stacking multiple DRAM dies to achieve faster data transfer, essential for AI accelerators.
1c DRAM: Samsung's codename for its 6th-generation 10nm-class DRAM process, which serves as the base technology for its latest DDR5 and HBM4 products.

Samsung's 1c DRAM Yield Surpasses 80%, Enters Stable Production; HBM4 Yield Nears 60%

Samsung's 6th-generation (1c) 10nm-class DRAM has surpassed an 80% yield rate, signaling its entry into a stable mass production phase and significantly boosting its cost competitiveness.

This yield improvement also extends to the next-generation HBM4 memory, enhancing its production yields and strengthening Samsung's competitive edge in the AI semiconductor market.

Achieved amidst strong memory prices driven by server and AI demand, this milestone positions Samsung to secure both cost advantages and a stable supply capability.

Samsung Electronics' latest 1c DRAM has officially entered a stable production phase, with its manufacturing yield surpassing the crucial 80% mark.

Yield: The percentage of functional, non-defective chips produced on a semiconductor wafer. A higher yield is crucial for profitability.
HBM (High Bandwidth Memory): A high-performance memory standard that involves vertically stacking multiple DRAM dies to achieve faster data transfer, essential for AI accelerators.
1c DRAM: Samsung's codename for its 6th-generation 10nm-class DRAM process, which serves as the base technology for its latest DDR5 and HBM4 products.