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Samsung Electronics' fourth-generation high bandwidth memory or HBM3 chips have been cleared by Nvidia for use in its processors for the first time, three people briefed on the matter
said. SeongJoon Cho | Bloomberg | Getty Images The U.S.-China chip war could impact South Korea's chip giants as China accounts for a large chunk of their production capacity — but
there shouldn't be long-term disruptions, according to Fitch Ratings. Samsung Electronics and SK Hynix face risks as the U.S. seeks to block China's access to advanced
semiconductor chip equipment, according to the June 7 report. China accounts for 40% of Samsung's total flash memory chips (NAND) production capability, said the analysts led by Matt
Jamieson. It also accounts for 40%-50% of SK Hynix's dynamic random access memory (DRAM) chips and 20% of its NAND capacity. "We do not think there would be a major long-term
supply disruption, as it is likely that Korea will become the main location for the two companies' expansionary investment and technology upgrades," the credit ratings agency said
in the June 7 report. The U.S. in October introduced sweeping rules to cut off China's access to obtain or manufacture high-tech semiconductor chips. They came as concerns grew over
China's ability to use such high-tech chips to advance its military capabilities. The Netherlands and Japan are reportedly poised to follow suit. Samsung Electronics and SK Hynix are
the two largest manufacturers of memory chips globally, followed by U.S.-based Micron in third place. Memory chips are storage devices used in computers, smartphones and tablets. READ MORE
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companies' fabrication plants in China make advanced chips as well as older chips, which are exempted from the U.S. restrictions. The memory chips are produced for Chinese consumption
as well as exports. However, the two chip giants obtained one-year waivers from the U.S. to continue importing advanced tools for their China plants until October, according to the Korea
Times. "Should the U.S. not extend the waiver, we expect the companies to continue producing memory chips at their Chinese plants using already installed technology," said Fitch
Ratings. BENEFIT FROM MICRON BAN In what is seen as a retaliatory move, China banned the sale of products from Micron for use in critical information infrastructure in May. Fitch Ratings
said Samsung and SK Hynix "may benefit from higher chip prices within China as a result. However, the impact is likely to be small and could be offset if Micron redirects the sale of
its memory chips outside of China, as this would probably lower global chip prices." The White House reportedly urged South Korea not to let its chipmakers fill Micron's void in
China. Around 10% of Micron's revenue come from China, according to Micron's fiscal 2022 report. The Fitch report said the two South Korean chipmakers will at least partially fill
Micron's gap. "It will be difficult to monitor what capacity lost by Micron is actually filled by the Korean companies, given the commodity-like nature of memory chips."
"The logistics of this strategy could take time, but could offset any positive impact Samsung Electronics and SK Hynix may obtain from the ban on Micron within China in light of the
world's memory chip oversupply," the analysts said. However, risks could further increase if the U.S. or China implement more extreme rulings and bans, as it will affect the cost
and availability of semiconductor supply-chain components, they added.