Question · Q1 2026
Kevin Cassidy asked how the expected faster HBM4 yield ramp compared to HBM3 affects Micron's process technology cadence and production longevity. He also inquired about the flexibility and speed with which Micron can change wafer allocation between HBM, low power, and high-performance products, and how far into the process technology this change can occur.
Answer
Manish Bhatia (EVP of Global Operations) clarified that both HBM3E and HBM4 are on the 1-beta process technology, leveraging common assembly architecture and process learnings for faster HBM4 yield ramp. He stated that HBM4 will be on 1-beta and the cadence of customer platforms remains rapid. Regarding wafer allocation, he explained that while processes are shared, designs are unique, so changes take one process cycle time. Sumit Sadana (Chief Business Officer) added that customers are typically given a 5+ month lead time for changes, while Mark Murphy (CFO) emphasized extensive planning and the value of 1-beta's stability for HBM.
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