Micron HBM4 Production Ramps Twice as Fast as Previous Generation

Micron Technology's HBM4 memory chip is scaling production at roughly double the speed of the previous generation, according to EVP Manish Bhatia at a J.P. Morgan investor conference. The company began volume shipments in March 2026 for Nvidia's Vera Rubin platform, and its entire 2026 HBM supply-including HBM4-is already fully allocated.

Bhatia credited faster-than-expected yields to operational learnings, design simplifications, and supply chain optimizations. HBM4 delivers speeds above 11 Gbps per pin and bandwidth exceeding 2 terabytes per second per stack, with 36 GB capacity. That's more than double HBM3E's bandwidth in 12-high stacks.

Micron's fiscal Q3 2026 results showed adjusted EPS of $25.11, beating Wall Street's $20.49 estimate by 23%, while revenue of $41.46B surpassed the $35.69B forecast by 16%. The company also crossed $1 billion in HBM revenue, though it still trails SK Hynix in the market.