The initiative aims to reduce reliance on external memory suppliers for high-bandwidth AI memory by strengthening a Taiwan-based integration pathway alongside global players like Samsung and SK Hynix.

TSMC and Winbond are partnering to build a localized DRAM supply chain using 3D wafer-on-wafer stacking to feed AI hardware needs, with production centered closer to Taiwan.

The collaboration aligns with TSMC's Parts Localization Program, which has already added significant annual output value and reduced validation times since 2024, with gains reported up to early 2026.

Neither company has disclosed specific yields or production timelines for this collaboration, and public details remain limited.

TSMC will handle the stacking and integration using its SoIC/WoW packaging capabilities to deliver a compact, high-bandwidth memory solution.

Winbond provides WoW-ready DRAM wafers through its CUBE architecture, offering densities from 256Mb to 8Gb per die, while TSMC manages the stacking and integration.

This effort is part of a broader momentum in Taiwan’s local 3D DRAM/IC collaboration, similar to UMC’s 2023 wafer-to-wafer initiative that involved Winbond and other partners.