The world’s two largest memory-chip manufacturers have pledged $518 billion (about 800 trillion won) to build four new memory fabrication plants (fabs) in southwestern South Korea, a part of the country that historically received little semiconductor investment. The announcement was made as part of a broad national investment plan covering semiconductors, AI data centers and physical AI, revealed at a presidential briefing on Monday.
Breakdown of the investment plan
According to the plan, the memory-chip portion includes $518 billion for the four southwest fabs plus an additional $52 billion for an HBM (high bandwidth memory) packaging hub in the central region. Separately, roughly $356 billion (550 trillion won) has been allocated for AI data centers to be built by Korean tech and energy conglomerates such as SK, GS, and Naver through 2035.
Taken together, South Korean tech companies have committed to spending over $900 billion on AI and the chip demand it generates. The government and industry hope these investments will elevate South Korea’s position in the global AI and semiconductor ecosystems.
Context: surging demand and “RAMageddon”
Samsung and SK Hynix (along with U.S. memory-chip maker Micron) are currently experiencing record demand for memory chips, a situation sometimes dubbed “RAMageddon” — a global memory shortage driven by the AI buildout.
Political messaging and rationale
President Lee Jae Myung said in a televised address Monday that semiconductors, physical AI, and AI data centers form the three axes of South Korea’s next industrial era, naming 2026 as the year the country must establish itself as an “irreplaceable” industrial power. He argued that existing facilities in Yongin and Pyeongtaek, at the heart of South Korea’s semiconductor belt just south of Seoul, have “already reached their limits,” and urged companies to speed investment in the southwest to spread AI-related prosperity beyond the capital region.
Lee pushed back against media reports that the government had pressured companies into the investments, saying the decisions reflected the companies’ own judgments and that the government’s role is to deploy its capabilities so companies can invest without losses and with better prospects.
Corporate commitments
Samsung separately issued a statement on Monday announcing plans to invest 2,655 trillion won (about $1.7 trillion) over the next decade, with 425 trillion won earmarked for the Honam region in the southwest. The company cited anticipated incentives related to power, water, workforce and living conditions as key factors in selecting Gwangju (about 300 kilometers south of Seoul) for a new semiconductor fab, and Haenam for an AI data center.
By comparison, U.S. tech giants Alphabet, Amazon, Meta and Microsoft are expected to spend roughly $650 billion on AI infrastructure this year alone.
SK Group announced a 2,100 trillion won (around $1.4 trillion) medium- to long-term investment roadmap, allocating 1,100 trillion won to expand semiconductor production capacity and 1,000 trillion won to AI data centers nationwide. SK Hynix is central to the chip expansion; SK Telecom will lead efforts to build 15 gigawatts of AI data-center capacity across the country.
Execution risks
Whether these ambitions will translate into realized capacity remains uncertain. Deep-tech sectors such as semiconductors and AI do not move to political timetables, and fabs take years to build. There is a risk that demand could soften by the time new plants come online, leaving companies exposed to oversupply and price declines. For now, the global AI chip supply chain — especially memory-hungry buyers — will be watching to see if South Korea can deliver on its plans.
