The Silicon Shift Why South Korean Chipmakers Are Winning the New US-China Tech War

Geopolitical Neutrality as Competitive Moat

While South Korea is having to balance relationships with both Washington and Beijing, the country is actually coming out as the victor by managing these relationships correctly. Both U.S. companies are facing difficulties with export licensing and regulations being put in to place for Chinese companies because of the entity list; but South Korean semiconductor companies continue to successfully produce semiconductors as a result of their uninterrupted access to bilateral trade agreements.

As an example, Samsung's new 3nm GAA process will be able to be shipped to both U.S. hyperscale datacenters located in America; however, they can also ship to Chinese OEM's because of their unrestricted access allowed under the bilateral trade agreement. This will allow Samsung to ship semiconductors for both Nvidia Blackwell AI silicon and Tencent's AI datacenter.

Indians designers looking for foundry partners from India will be able to work with Samsung in Pyeongtaek and qualify their designs without worrying about whether they are going to have export licensing issues and whether their foundry partner will still be there at the time their designs are being finished.

Manufacturing Scale Nobody Can Match

Korea produces 60% of global DRAM production and 40% of global NAND flash production, while Samsung Foundry is achieving a 7.5% yield on 2nm production. Meanwhile, TSMC is dealing with the risk of the Taiwan Strait, and Intel is still trying to catch up.

This is very favorable for the Indian companies. The Chennai assembler experiences 16-week lead times from Taiwan; however, due to the availability of Korean HBM, the BOM cost of mobile phones is reduced by 8%. Local EMSs such as Dixon and Amber now have more margin to work with.

HBM Dominance: The Real Prize

The battle between the US and China for technology leadership is epitomized by high-bandwidth memory (HBM) chips. Each of Nvidia's H100 and H200 GPUs contains 12 to 16 stacks of HBM3e memory, and South Korea provides 90% of that. SK Hynix will introduce HBM4 memory at the Hot Chips conference in 2026, while Samsung is delivering its CoWoS packaging to TSMC. Chinese companies are currently two generations behind the leading competitors in HBM and charge a threefold premium over other HBM sources.

For Indian enterprises, using Korean-made HBM chips in AI inference clusters for Reliance Jio or in fraud detection at HDFC will reduce their costs from the expensive, restricted imports from the United States. Importers of GPUs in Bangalore are reporting 25% lower landed cost for importing GPUs.

Government-Backed Capacity Explosion

Seoul plans to invest 27 trillion won (20 billion US dollars) over the next decade on national strategic technologies like developing a next-generation 1.4-nanometre process technology and R&D in High Bandwidth Memory 5 (HBM5). To support its semiconductor supply chain, South Korea will add 1.6 million square meters of new fab space to the country’s Semiconductor Megacluster in Yongin by 2028. This comes at the same time that TSMC is expanding its Arizona fab at a much slower pace, with a higher capex per kg of wafer.

This turns out to be an important policy lesson for India. When the Ministry of Electronics and Information Technology (MeitY) allocates PLI funds to OSAT companies, they can only achieve sub-10nm capability through a vertically integrated OSAT company, this includes Tata's new Assam fab. These companies will benefit from having exclusionary relationships with Korean equipment vendors.

Supply Chain Resilience Beats Geography

TSMC's risk related to Taiwan's concentration caused their stock price to decline 15% during the 2025 Strait of Taiwan issues. In contrast, Samsung's fabs located in South Korea, the USA, and China produce 99.7% of their production as scheduled. SK Hynix’s backup site in Wuxi produces 85% of Korean capacity during times of disturbance to the regional areas.

From an EMS perspective in India, Foxconn, Pegatron, and Wistron in India select Korean suppliers to supply products when lead times from Taiwan are longer than 24 weeks. In Chennai, iPhone production lines operate with pure Korean memory as opposed to sporadic shortages of NAND products through their production.

The Indian Supply Chain Recalibration

In terms of short term - the issues regarding GPU/AI servers for Jio and Airtel's edge compute continue to improve through sourcing Korean High Bandwidth Memory. They've also secured 18 month supply contracts with Indian OEM's at a 12% discount versus spot price.

For the medium term, Tata, HCL and Vedanta are placing greater importance on their partnerships with Korean OSATs vs. European OSATs that are restricted in being re-exported out of the US.

Long term, the India Semiconductor Mission is learning the fab-to-foundry evolution of South Korea, and will see domestic players build a position in the HBM packaging niche by 2032 capturing 8% of the regional market share.

Positioning for the Multi-Polar Silicon Era

The Silicon Shift provides Indian companies with reliable supplies and challenges them to get involved with both Co-developing packaging Roadmaps and Hiring Korean VLSI talent before the disbursement of PLI funding - with those companies that do nothing now facing the possibility of paying 25% above actual costs when using Korean manufacture Fabs operating at 105% capacity.

Strategically purchase Korean Supply now. Develop co-development Packaging Roadmaps; Immediately hire Korean VLSI talent - prior to PLI funding disbursements. US / China tech wars continue but Korean silicon keeps the world connected.