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Memory chips are at the center of all devices, helping store and access data in smartphones, computers and the servers training generative artificial intelligence models.

Just three companies make more than 90% of the world’s dynamic random-access memory, or DRAM, chips. With Samsung and SK Hynix both headquartered in South Korea, Idaho-based Micron is the only manufacturer in the U.S. — that has made it the latest target of China’s bans on U.S. technologies.

About a quarter of Micron’s revenue comes from China, and “about half that revenue is at risk,” Micron CEO Sanjay Mehrotra told CNBC in an interview.

Meanwhile, Micron is doubling down on U.S. manufacturing. Its current leading-edge chips are made in Japan and Taiwan, but Micron is aiming to bring advanced memory production to the U.S. starting in 2026 with a new $15 billion chip fabrication plant in Boise, Idaho. Micron celebrated its 45th anniversary in October by pouring the first cement at the new fab.

The facility is located next to Micron’s huge research and development facility, where CNBC got a behind-the-scenes tour.

Micron’s existing research and development facility in Boise, Idaho, shown here on Oct. 6, 2023.

Ben Farrar

“Memory is very cost-sensitive and we have to get economies of scale to mass produce our chips on a level that meets the market demands,” said Scott Gatzemeier, Micron’s corporate vice president of front end U.S. expansion.

DRAM and NAND memory chips are a cheaper type of semiconductor than the high-powered central processing units from Intel and AMD and graphics processing units that sparked Nvidia’s growth. But multiple memory chips are needed to support each GPU or CPU, so making memory requires more fab space. 

That’s why Micron is planning the biggest chip project in U.S. history, spending $100 billion over 20 years to build four 600,000 square foot fabs in upstate New York.

Mehrotra told CNBC that Micron’s goal is to vastly increase the U.S. share of DRAM production, which he said currently sits at just 2%. That production comes from Micron’s fab in Manassas, Virginia. The company is getting assistance from the federal CHIPS and Science Act, which offers billions of dollars to incentivize domestic production.

“With Micron’s investments through CHIPS support in Boise, Idaho, as well as in Syracuse, New York, that 2% over the course of nearly 20 years will be changing to about 15% of the worldwide production coming from the U.S.,” Mehrotra said.

The U.S. share of overall chip manufacturing has plummeted from 37% to 12% in the last three decades, largely because it costs at least 20% more to build and operate a new fab in the U.S. than in Asia. Labor is also cheaper there, the supply chain is more accessible and government incentives have been far greater. That’s why the CHIPS and Science Act set aside $52.7 billion for companies that manufacture in the U.S. 

Senate Majority Leader Chuck Schumer, D-N.Y., co-sponsored the bill.

“When it came to chips so essential to everything we do, we had lost that edge,” Schumer told CNBC in an interview. “And if we didn’t get back that edge, not just on chips but on science broadly, we would no longer be the No. 1 economic power in the world.”

Micron and at least 460 other companies have applied for funds from the CHIPS Act. States are also offering incentives to entice chip companies. Micron told CNBC it’s eligible for up to $5.5 billion from the state of New York for the four fabs it’s building just north of Syracuse. New York Gov. Kathy Hochul signed the state’s Green CHIPS Act into law last year.

“If they hadn’t passed the CHIPS and Science Act first, I don’t think it would have been as many incentives as necessary,” Hochul said. “I knew I had to woo them, talk about our incentives, but also we get out of it 50,000 jobs. That’s a good deal for us any day of the week.”

These promises come on the heels of a major price slump for memory chips, which led to layoffs at Micron and SK Hynix, and resulted in Samsung slashing production. Now, Micron is betting big that the memory market will grow.

“The large language learning models and other things like that continue to increase large demand,” Gatzemeier said.

“We’re now moving into things like FaceTime, higher resolution images, movies on demand,” he said. “All of that requires more and more memory to be made available.”

Micron says construction in New York will begin at the end of 2024 and chip production there will start in 2027. With both Idaho and New York fabs online, Mehrotra told CNBC that Micron plans to increase the share of chips it makes in the U.S. from 10% to nearly 60% in the next two decades.

Micron CEO Sanjay Mehrotra shows CNBC’s Katie Tarasov a 300mm silicon wafer at the memory company’s San Jose office on Oct. 2, 2023.

Kent Kessinger

‘Feast or famine’

Micron was founded in 1978 by three chip engineers, along with one of their twin brothers, in the basement of a dental office in Boise. By 1980, it was building its first fab and a year later was pumping out a revolutionarily small 64K DRAM chip. These chips, used for storing bits of data that can be quickly accessed by a CPU, ended up in many of the early PCs.

Gatzemeier, who joined as an intern in 1997, explained the two main kinds of memory: DRAM and NAND.

DRAM is “volatile memory, which means that when the power is removed, it loses all of its information. It’s very fast but has to be, and it sits near the CPU and it’s used for real-time processing,” he said. “NAND flash memory is what’s in your SSDs or your storage cards. And NAND flash is nonvolatile, meaning it’ll still store your memory even when the power’s removed.”

Micron went public in 1984. Memory was a crowded field, but over the years, it has whittled down to just three top players. 

“The name of the game is high performance and low cost at the same time,” said Patrick Moorhead, CEO of Moor Insights and Strategy. “Otherwise, you’re going to be blasted out of the market.”

When it comes to the biggest type of memory, DRAM, Samsung is by far the leader, followed by SK Hynix and then Micron. Micron has made 11 acquisitions since 1998, including Texas Instruments‘ memory division, Numonyx, Elpida and Inotera.

“For a very long period, they had not invested in a new fab,” said Gaurav Gupta, an analyst at Gartner. “But they were still able to retain their market share by acquiring other smaller memory firms, which were either going out of business or bankrupt.”

Unlike many kinds of chips, memory wasn’t in short supply during the chip shortage. Micron and its competitors saw a major upswing in the pandemic-fueled boom in consumer electronics. Micron’s profits then fell significantly due to weakened demand for PCs and smartphones and a chip oversupply that led to lower prices. It’s a downturn that has affected much of the chip industry

“When I look at this market over the past 30 years, it’s always feast or famine,” Moorhead said. “We have an oversupply now. But guess what? Give it a couple of months and we will be in an undersupply and prices will go up.”

Even amid the downturn, Mehrotra is optimistic about the growth of Micron’s smartphone business. It supplies memory in phones from Apple, Motorola, Asus and more.

“The mix of smartphones is going more and more toward higher-end smartphones, toward the flagship smartphones, which require more memory as well,” Mehrotra said. “When we look ahead at 2024, we actually expect that year-over-year total worldwide smartphone unit sales will increase.”

Micron is also focused on rapid growth markets such as automotive and AI. The next generation of its most advanced product, High Bandwidth Memory, is set for volume production next year. HBM helps AI models such as ChatGPT remember past conversations and user preferences to generate more humanlike responses.

“It is able to pack 50% more memory capacity in a memory cube,” Mehrotra said. “It is able to give you 50% faster performance and is able to give you about 2.5 times better power and performance efficiency. And these are all the elements that are critically important in AI applications.”

Banned in China

Micron is facing one major specific challenge. In May, China’s cybersecurity administration banned some of its sales to key China infrastructure projects, saying it failed a security review. Last year, the U.S. barred chip companies from supplying China with certain key technologies.

“Micron is absolutely just a pawn in this game right now,” Moorhead said. “They weren’t the first and they were not the last.”

Mehrotra offers a more diplomatic approach.

“It’s very important for U.S. and China to provide an environment to the businesses so that they can invest in a predictable manner,” he said. “And what I can also tell you is that Micron, of course, is totally committed to bringing the value of its technology and products and manufacturing scale to the benefit of our customers across various end markets in China.”

Meanwhile, Micron has started construction on a $2.75 billion assembly and test facility in India.

“Micron is obviously trying to diversify its base,” Gartner’s Gupta said. “It has testing and packaging facilities in China. And obviously they are trying to move, diversify out of China.”

China can still rely on chips from Samsung, SK Hynix and smaller Chinese memory makers. That’s because memory is considered a commodity, meaning it’s relatively easy to switch between products from different companies. But that’s not guaranteed to last.

“When we get back to the boom days and Hynix and Samsung can’t fulfill all the volumes, you might see China diving back into Micron and suddenly lifting any restrictions,” Moorhead said.

Moorhead added that China’s cybersecurity risk accusation about Micron is “a front.”

“Compared to a CPU or a GPU system, it’s pretty hard to embed something nefarious into something like storage or memory,” he said. “That would be technology that I have never heard of.”

Schumer led a delegation of senators to visit China in October for a rare meeting with President Xi Jinping, in part to discuss the ban on Micron.

“We think China was being very nasty about this to Micron,” Schumer told CNBC ahead of the visit. “China’s upset with the Biden administration’s very smart prohibition of selling certain types of chip manufacturing equipment to China. But we’re going to stick up for Micron.”

This also isn’t the first time Micron has been at the center of U.S.-China tensions. In 2018, the U.S. accused Chinese chip company Fujian Jinhua of stealing intellectual property from Micron, a claim the Chinese company denied.

With no slowdown in geopolitical tension, Micron is instead focusing on U.S. expansion. Water and power were both significant reasons Micron settled on New York for its biggest project.

A rendering of Micron’s planned four memory chip fabs it will build north of Syracuse, New York, spending $100 billion over the next 20 years.

Micron

“Not just the Finger Lakes, but two Great Lakes: Lake Erie and Lake Ontario,” Hochul said. “There’s plentiful water and low-cost power generated primarily by hydroelectric and wind and solar. So we’re ready for it. We know it’s going to be a transition, but that’s what we want to do.”

Micron said each of its new fabs will use the equivalent of 25 Olympic-size swimming pools worth of water each day, with a goal of reusing or recycling 75% of that. Micron will also use the same amount of energy required to power some 25,000 homes.

“The energy costs are, interestingly enough, lower in the United States than most parts of the world,” Moorhead said. “People are more expensive in the United States, and so is the materials and the cost to build that factory. But that gap is narrowing over time.”

In Arizona, the world’s advanced chip leader, Taiwan Semiconductor Manufacturing Company, recently blamed a shortage of skilled labor for delays to its massive $40 billion fab under construction.

“That won’t happen in New York because we already have a legacy,” Hochul said. “We have Wolfspeed, we have GlobalFoundries. So this is not a new industry to us.”

Micron runs a Chip Camp in Boise for middle schoolers, which Gatzemeier’s daughter attended over the summer, and is investing in university programs to feed the pipeline for future semiconductor engineers.

“We’re actively starting our hiring ramp now,” Gatzemeier said. “We’ve started aggressively targeting all the universities. We’re also really going to draw on the global resources that Micron has across the world and bring in some of that semiconductor expertise to help train these new team members.”

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Whoop says FDA is ‘overstepping its authority’ with warning about blood pressure feature

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Whoop says FDA is 'overstepping its authority' with warning about blood pressure feature

The logo for the Food and Drug Administration is seen ahead of a news conference on removing synthetic dyes from America’s food supply, at the Health and Human Services Headquarters in Washington, DC on April 22, 2025.

Nathan Posner | Anadolu | Getty Images

The U.S. Food and Drug Administration on Tuesday published a warning letter addressed to the wrist wearable company Whoop, alleging it is marketing a new blood pressure feature without proper approvals.

The letter centers around Whoop’s Blood Pressure Insights (BPI) feature, which the company introduced alongside its latest hardware launch in May.

Whoop said its BPI feature uses blood pressure information to offer performance and wellness insights that inform consumers and improve athletic performance.

But the FDA said Tuesday that Whoop’s BPI feature is intended to diagnose, cure, treat or prevent disease — a key distinction that would reclassify the wellness tracker as a “medical device” that has to undergo a rigorous testing and approval processes.

“Providing blood pressure estimation is not a low-risk function,” the FDA said in the letter. “An erroneously low or high blood pressure reading can have significant consequences for the user.”

A Whoop spokesperson said the company’s system offers only a single daily estimated range and midpoint, which distinguishes it from medical blood pressure devices used for diagnosis or management of high blood pressure.

Whoop users who purchase the $359 “Whoop Life” subscription tier can use the BPI feature to get daily insights about their blood pressure, including estimated systolic and diastolic ranges, according to the company.

Whoop also requires users to log three traditional cuff-readings to act as a baseline in order to unlock the BPI feature.

Additionally, the spokesperson said the BPI data is not unlike other wellness metrics that the company deals with. Just as heart rate variability and respiratory rate can have medical uses, the spokesperson said, they are permitted in a wellness context too.

“We believe the agency is overstepping its authority in this case by attempting to regulate a non-medical wellness feature as a medical device,” the Whoop spokesperson said.

Read more CNBC tech news

High blood pressure, also called hypertension, is the number one risk factor for heart attacks, strokes and other types of cardiovascular disease, according to Dr. Ian Kronish, an internist and co-director of Columbia University’s Hypertension Center.

Kronish told CNBC that wearables like Whoop are a big emerging topic of conversation among hypertension experts, in part because there’s “concern that these devices are not yet proven to be accurate.”

If patients don’t get accurate blood pressure readings, they can’t make informed decisions about the care they need.

At the same time, Kronish said wearables like Whoop present a “big opportunity” for patients to take more control over their health, and that many professionals are excited to work with these tools.

Understandably, it can be confusing for consumers to navigate. Kronish encouraged patients to talk with their doctor about how they should use wearables like Whoop.

“It’s really great to hear that the FDA is getting more involved around informing consumers,” Kronish said.

FILE PHOTO: The headquarters of the U.S. Food and Drug Administration (FDA) is seen in Silver Spring, Maryland November 4, 2009. 

Jason Reed | Reuters

Whoop is not the only wearable manufacturer that’s exploring blood pressure monitoring.

Omron and Garmin both offer medical blood pressure monitoring with on-demand readings that fall under FDA regulation. Samsung also offers blood-pressure-reading technology, but it is not available in the U.S. market.

Apple has also been teasing a blood pressure sensor for its watches, but has not been able to deliver. In 2024, the tech giant received FDA approval for its sleep apnea detection feature.

Whoop has previously received FDA clearance for its ECG feature, which is used to record and analyze a heart’s electrical activity to detect potential irregularities in rhythm. But when it comes to blood pressure, Whoop believes the FDA’s perspective is antiquated.

“We do not believe blood pressure should be considered any more or less sensitive than other physiological metrics like heart rate and respiratory rate,” a spokesperson said. “It appears that the FDA’s concerns may stem from outdated assumptions about blood pressure being strictly a clinical domain and inherently associated with a medical diagnosis.”

The FDA said Whoop could be subject to regulatory actions like seizure, injunction, and civil money penalties if it fails to address the violations that the agency identified in its letter.

Whoop has 15 business days to respond with steps the company has taken to address the violations, as well as how it will prevent similar issues from happening again.

“Even accounting for BPI’s disclaimers, they do not change this conclusion, because they are insufficient to outweigh the fact that the product is, by design, intended to provide a blood pressure estimation that is inherently associated with the diagnosis of a disease or condition,” the FDA said.

WATCH: Watch CNBC’s full interview with FDA commissioner Dr. Marty Makary

Watch CNBC's full interview with FDA commissioner Dr. Marty Makary

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Amazon turns to rival SpaceX to launch next batch of Kuiper internet satellites

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Amazon turns to rival SpaceX to launch next batch of Kuiper internet satellites

United Launch Alliance Atlas V rocket carrying the first two demonstration satellites for Amazon’s Project Kuiper broadband internet constellation stands ready for launch on pad 41 at Cape Canaveral Space Force Station on October 5, 2023 in Cape Canaveral, Florida, United States.

Paul Hennessey | Anadolu Agency | Getty Images

As Amazon chases SpaceX in the internet satellite market, the e-commerce and computing giant is now counting on Elon Musk’s rival company to get its next batch of devices into space.

On Wednesday, weather permitting, 24 Kuiper satellites will hitch a ride on one of SpaceX’s Falcon 9 rockets from a launchpad on Florida’s Space Coast. A 27-minute launch window for the mission, dubbed “KF-01,” opens at 2:18 a.m. ET.

The launch will be livestreamed on X, the social media platform also owned by Musk.

The mission marks an unusual alliance. SpaceX’s Starlink is currently the dominant provider of low earth orbit satellite internet, with a constellation of roughly 8,000 satellites and about 5 million customers worldwide.

Amazon launched Project Kuiper in 2019 with an aim to provide broadband internet from a constellation of more than 3,000 satellites. The company is working under a tight deadline imposed by the Federal Communications Commission that requires it to have about 1,600 satellites in orbit by the end of July 2026.

Amazon’s first two Kuiper launches came in April and June, sending 27 satellites each time aboard rockets supplied by United Launch Alliance.

Assuming Wednesday’s launch is a success, Amazon will have a total of 78 satellites in orbit. In order to meet the FCC’s tight deadline, Amazon needs to rapidly manufacture and deploy satellites, securing a hefty amount of capacity from rocket providers. Kuiper has booked up to 83 launches, including three rides with SpaceX.

Space has emerged as a battleground between Musk and Amazon founder Jeff Bezos, two of the world’s richest men. Aside from Kuiper, Bezos also competes with Musk via his rocket company Blue Origin.

Blue Origin in January sent up its massive New Glenn rocket for the first time, which is intended to rival SpaceX’s reusable Falcon 9 rockets. While Blue Origin currently trails SpaceX, Bezos last year predicted his latest venture will one day be bigger than Amazon, which he started in 1994.

Kuiper has become one of Amazon’s biggest bets, with more than $10 billion earmarked for the project. The company may need to spend as much as $23 billion to build its full constellation, analysts at Bank of America wrote in a note to clients last week. That figure doesn’t include the cost of building terminals, which consumers will use to connect to the service.

The analysts estimate Amazon is spending $150 million per launch this year, while satellite production costs are projected to total $1.1 billion by the fourth quarter.

Amazon is going after a market that’s expected to grow to at least $40 billion by 2030, the analysts wrote, citing estimates by Boston Consulting Group. The firm estimated that Amazon could generate $7.1 billion in sales from Kuiper by 2032 if it claims 30% of the market.

“With Starlink’s solid early growth, our estimates could be conservative,” the analysts wrote.

WATCH: Amazon launches first Kuiper internet satellites into space

Amazon launches first Kuiper internet satellites into space

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Bitcoin falls below $117,000 after Trump crypto bills are blocked before vote

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Bitcoin falls below 7,000 after Trump crypto bills are blocked before vote

Bitcoin falls as lawmakers grapple with crypto regulation bills: CNBC Crypto World

Bitcoin fell below the $117,000 level on Tuesday after cryptocurrency-related bills were blocked in the House of Representatives.

The price of bitcoin was last down 2.8% at $116,516.00, according to Coin Metrics. That marks a pullback from the day’s high of $120,481.86.

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Bitcoin/USD Coin Metrics, 1-day

The drop comes on the heels of multiple crypto-related bills failing to overcome a procedural hurdle in the House, with 13 Republicans voting with Democrats to block the motion in a 196-223 vote.

In recent days, bitcoin has been trading at all-time highs, spurred by institutional buying of bitcoin exchange-traded funds (ETFs) amid rising optimism that Congress would soon pass crypto legislation.

Stocks linked to crypto also came under pressure in late afternoon trading. Shares of bitcoin miners Riot Platforms and Mara Holdings closed down 3.3% and 2.3%, respectively. Others like crypto trading platforms Coinbase slid 1.5%. All were under pressure in extended trading.

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