Samsung is building a memory megafab, with mass production targeted around late 2028

After suspending construction in 2024 during the memory downturn, Samsung is now moving forward with P5, a massive triple fab that could be as large as P3 and P4 combined
The company is also pulling forward P5 Fab 2, with construction expected to begin in July 2026 and commercial operations targeted around 2029
The idea appears to be a twin-fab model, where P5 and P5 Fab 2 are built almost identically so hyperscale customers can shift production between fabs without fully requalifying from scratch
Most of this supply will only arrive in 2028, 2029, or even 2030. In the meantime, Samsung is also upgrading P4 for 1c DRAM, which is important for HBM and next-generation memory
The investment scale is massive, with Korean reports pointing to around 80 trillion won per fab, or 160 trillion won for the full twin-fab plan. Construction contracts from Samsung C&T and Samsung E&A suggest the project is already moving from planning into real execution
For equipment suppliers, this is positive. Samsung has reportedly ordered around 20 EUV systems from $ASML for P5, alongside a larger package of DUV lithography tools, tied to 1c DRAM and HBM4 capacity expansion