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Yes—according to a Financial Times report published in April 2023, the White House asked South Korea to encourage Samsung Electronics and SK Hynix not to replace Micron if China restricted sales of the U.S. chipmaker’s products. The reported request was not presented in the available sources as a written U.S. policy directive. China later announced a narrower measure: operators of critical information infrastructure should stop purchasing Micron products after the company failed a cybersecurity review.
What the U.S. reportedly asked South Korea to do
Reuters summarized the Financial Times report on April 23–24, 2023, which cited people familiar with the talks. The reported request was for Seoul to urge Samsung Electronics and SK Hynix not to fill a potential sales gap if China restricted Micron. The two South Korean companies compete with Micron and sell similar memory chips in China. Both had no comment on the reported request, according to Reuters.
The distinction matters: the account describes a reported diplomatic request, not a confirmed written instruction or public U.S. rule requiring the companies to withhold sales.
What China’s Micron measure covered
China’s Cybersecurity Review Office announced on March 31, 2023, that it had begun a cybersecurity review of Micron products sold in China. On May 21, the Cyberspace Administration of China (CAC) said Micron products failed the review and instructed operators of critical information infrastructure in China to stop purchasing them. The notice did not say that every Chinese company or consumer was barred from buying Micron products. China’s CAC announcement
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- Boosts System Performance: 32GB DDR5 RAM laptop memory that operates at 5600MHz, 5200MHz, or 4800MHz to improve multitasking and system responsiveness for smoother performance
- Accelerated gaming performance: Every millisecond gained in fast-paced gameplay counts—power through heavy workloads and benefit from versatile downclocking and higher frame rates
- Optimized DDR5 compatibility: Best for 12th Gen Intel Core and AMD Ryzen 7000 Series processors — Intel XMP 3.0 and AMD EXPO also supported on the same RAM module
- Trusted Micron Quality: Backed by 42 years of memory expertise, this DDR5 RAM is rigorously tested at both component and module levels, ensuring top performance and reliability
- ECC type = non-ECC, form factor = SODIMM, pin count = 262-pin, PC speed = PC5-44800, voltage = 1.1V, rank and configuration = 2Rx8
The CAC cited security risks as its rationale. That is the regulator’s stated finding; the announcement alone does not independently establish that Micron products contained a security vulnerability. The available source documents the measure announced in May 2023, but does not establish whether China later amended or revoked it or how it is enforced today.
Why Samsung and SK Hynix faced a difficult choice
Samsung and SK Hynix were positioned to compete for sales if Chinese buyers could no longer purchase Micron products. But replacing those sales could bring commercial and diplomatic consequences. A July 2023 analysis by the Peterson Institute for International Economics (PIIE) described the companies as caught between pressure from China and the United States.
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- Compatibility assurance when using the Crucial System Scanner or Crucial Advisor Tool
- Micron quality and reliability is backed by superior component and module level testing and 42 years of memory expertise
- ECC Type = Non-ECC, Form Factor = UDIMM, Pin Count = 288-pin, PC Speed = PC4-21300, Voltage = 12V, Rank and Configuration = 1Rx16, 1Rx8 or 2Rx8
- Sales or diplomatic risk: Taking replacement business could attract U.S. political backlash; holding back could mean giving up revenue, particularly during a weak memory-chip market.
- Access to two markets: Companies’ production and sales decisions were shaped by their exposure to China as a market and to U.S. technology, including semiconductor manufacturing equipment subject to U.S. controls.
- Independent decisions or coordinated allocation: A company making its own commercial choice is different from governments arranging how sales or market shares should be divided. PIIE warned that a government-level arrangement of that kind could invite antitrust cases.
Changhan Lee, vice chair of the Korea Semiconductor Industry Association, told Reuters in May 2023: “In the long term, this won’t help anybody.” He was discussing the unpredictable conditions for investment.
How much China mattered to Micron
The U.S.-China Economic and Security Review Commission reported in 2023 that China accounted for nearly 11% of Micron’s revenue in fiscal year 2022. That is a historical figure, not a current estimate of Micron’s China exposure. The available sources do not establish a reliable 2026 share.
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- Micron MTA8ATF1G64AZ-2G6E1 Component for: PC/server.
- Internal memory: 8 GB.
- Memory arrangement (modules x dimensions): 1 x 8 GB
- Internal memory type: DDR4
- Memory frequency: 2666 MHz.Memory support: 288-pin DIMMCase latency: 19
What the U.S. said after China’s announcement
On May 27, 2023, after China announced its measure, U.S. Commerce Secretary Gina Raimondo said Washington opposed the action. Reuters reported her describing it as economic coercion: “These ‘target a single U.S. company without any basis in fact, and we see it as plain and simple economic coercion and we won’t tolerate it, nor do we think it will be successful.’” That public statement came after the Chinese announcement and is separate from the April report about what Washington asked Seoul to do.
Quick Recap
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- Form factor: DDR4 DIMM
- Clock Speed: 3200MT/s PC4-25600 Pin: 288 | Memory Capacity: 16GB Latency: CL22
- Micron Part Number: MTA16ATF2G64AZ-3G2J1
- Compatible with 6th, 7th, 8th, 9th, 10th & 11th Generation Intel Processors. Also compatible with AMD Ryzen based processors.
- These modules are also compatible with desktops from all other manufacturers including DELL, Lenovo, MSI, Acer, Alienware and many more.
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- High-Capacity Memory: Equipped with a massive 64GB of DDR4 SDRAM, this module ensures your system has ample space for multitasking and demanding applications
- Blazing-Fast Speed: Operating at 3200MHz, this RAM module delivers swift data processing and improved system performance
- ECC & Registered: Features ECC for error detection and correction, and registered signaling for enhanced stability and reliability
- Dual-Range Compatibility: Supports both single and dual-channel memory configurations, offering flexibility for various system setups
- Micron Quality: Backed by Micron's renowned expertise in memory solutions, ensuring top-notch performance and durability
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