Inside Samsung's $1.5 Billion Bet on Vietnam's Semiconductor Future

What the Plant Will Test: Legacy Chips in an AI World

The plant’s mission is narrowly focused: testing mature—often called legacy—DRAM and NAND memory chips . These are not the cutting-edge logic processors or advanced high-bandwidth memory (HBM) chips that dominate AI accelerator headlines. Instead, they are the workhorse memory components built on older process nodes, still essential for a vast range of electronics from cars to consumer appliances.

The investment is a direct response to a supply chain distortion created by the AI spending spree. As Samsung shifts its most advanced production lines toward premium, high-margin HBM for AI data centers, the manufacturing capacity for legacy DRAM and NAND has contracted, creating a global shortage . The company’s proposal document explicitly states the expansion will “help ease a global shortage of memory chips driven by surging AI demand” .

The Numbers: Capacity and a Potential Second Phase

A Reuters analysis of the company’s paperwork reveals the facility is designed for significant throughput: it is sized to test 153.3 billion gigabits of DRAM and 255.6 billion gigabits of NAND annually .

However, the headline $1.5 billion figure may only be the starting point. The environmental permit application for the project also references a possible additional investment of $2.5 billion . This indicates Samsung is considering a second phase or a larger second facility at the same site. If exercised, this option would bring the total investment in the Thai Nguyen testing complex to approximately $4 billion—entirely separate from the $4 billion packaging plant already announced for the province .

Cementing a $23+ Billion Empire

This new testing plant represents a pivotal deepening of Samsung’s relationship with Vietnam. Since establishing its first factory in Bac Ninh province in 2008, the company has poured more than $23.2 billion in cumulative investment into the country, making it the nation’s largest foreign investor . Vietnam’s manufacturing hubs now produce more than half of all Samsung mobile devices sold globally .

Previously, Samsung’s Vietnamese operations centered on final assembly of finished goods—smartphones, tablets, displays, and electrical devices. This new facility, alongside the packaging plant, marks a deliberate vertical expansion into the higher-value semiconductor back-end processes of testing and packaging . It locks Vietnam into a more sophisticated and essential rung of the global chip supply chain.

The move also aligns with a broader geopolitical trend. As countries and corporations seek to diversify semiconductor manufacturing and reduce over-concentration in any single region, Vietnam is actively positioning itself as a viable alternative manufacturing hub . With Intel already operating a large chip assembly and testing facility in Ho Chi Minh City, Samsung’s dual investment cements northern Vietnam as a critical cluster for memory chip back-end operations.

Timeline at a Glance:

• April 2026: Proposal document submitted to Vietnamese authorities
• May 2026: Construction confirmed as already underway
• November 2027: Plant scheduled to begin commercial operations