SK Hynix’s global NAND flash memory market share is expected to surpass 20% for the first time this year. SK Group Chairman Chey Tae-won has decided to take personal charge of the NAND business, which is expected to accelerate the process of narrowing the gap with market leader Samsung Electronics.Industry insiders stated on November 18th that SK Hynix’s global NAND market share, calculated by sales (according to IDC statistics), has increased by more than 10 percentage points over the past four years, growing from 11.7% in 2020 to 22.5% in the second quarter of this year. Although SK Hynix acquired Intel’s NAND division and launched Solidigm in 2021, the expansion of its market share was not as rapid as anticipated, rising from 13.7% in 2021 to 19% in 2022, but almost stagnating at 19.2% last year. The semiconductor economic downturn had a significant impact on Solidigm’s ongoing deficits.
Solidigm has steadily reduced its deficits and successfully turned a profit in the second quarter of this year (net profit of 7.86 billion won). Due to increased investment in AI data centers, the demand for high-capacity enterprise SSDs (eSSDs) has surged, and Solidigm’s competitiveness in this market has been rewarded. Only Samsung Electronics and Solidigm possess quad-level cell (QLC) NAND technology. NAND is categorized into SLC, MLC, TLC, and QLC based on data storage methods. Compared to SLC with the same cell, QLC can store four times more data, easily achieving high capacity and improving production cost efficiency.Due to sluggish demand in PCs and mobile devices, SK Hynix’s NAND shipments in the third quarter decreased compared to the previous quarter. However, profitability was maintained at a level similar to the second quarter because the average selling price (ASP) of high-value eSSDs increased by about 10% from the previous quarter. eSSDs accounted for more than 60% of SK Hynix’s NAND sales in the third quarter.Thanks to the continued strong demand for eSSDs, SK Hynix’s annual NAND market share this year is expected to exceed 20% for the first time. During a conference call to announce the third-quarter results, SK Hynix stated, “Although the NAND market share calculated by volume may decrease this year, we anticipate an increase in the market share calculated by sales compared to last year.”SK Hynix is poised to accelerate the reduction of the market share gap with Samsung Electronics, whose NAND market share is in the mid-30% range. SK Hynix aims to increase its market share with a focus on high-value products such as high-capacity eSSDs. The company recently launched a new eSSD product capable of achieving 122TB, the largest capacity for NAND solutions. There are also predictions that with Chairman Chey Tae-won recently taking over as the chairman of the Solidigm board, the NAND business will be further strengthened.
Xtreme 200E SSD,Today’s topic is about Huawei’s new solid-state drive (SSD). We have obtained a prototype of Huawei’s SSD that has not yet been released (it will be officially launched at the end of November). However, there is essentially no difference between this engineering sample and the final version, except for the serial number. It’s a 1TB single-sided chip SSD. Let me tell you, getting this SSD was quite an effort. Let’s see what secrets are hidden under this label. It’s just a regular sticker and does not serve any cooling function.
For the 1TB capacity, there are two chips and one controller, which is a standard DRAM-less solution. It’s not easy to distinguish the manufacturer of the chips from the numbering. Without further ado, let’s compare it with the Zhitai Ti600, which is also a popular SSD sold online. Through comparison, we can confirm that Huawei’s new SSD definitely does not use the Lian Yun controller, and it is even less likely to use controllers from Samsung, Phison, or Silicon Motion. So, there should be only one answer in our minds.
Warranty
Nice, in terms of warranty, Huawei offers a 400TBW warranty for the new SSD, coincidentally, the Zhitai Ti600 also offers a 400TBW warranty. It is also unlikely that Huawei would use storage chips from Micron, Samsung, or Kioxia. So, the answer in front of us might be the one we all have in mind. In terms of price, I estimate that it should not be too expensive.
Testing
The SSDs tested together are: Kioxia RC20 1TB and Western Digital SN850 1TB. First, we clarify that this test will not do Huawei’s SSD any injustice. Both SSDs tested alongside are flagship SSDs with cache. Looking at the basic parameters, the PCIe-4.0 x 4 full-speed is flawless, with sequential read speeds of 7100 and sequential write speeds of 6300, which is a pretty good performance. Digital novices like to focus on this parameter, and the commonly used 4k91mb and 286mb performance is basically enough for daily use. This data is also basically consistent with Zhitai’s Ti 600, and we need to look at the 200GB+ mixed data write test.
SSD Cache
Why test 280GB? Because I initially thought it would have a 200GB cache, like the Zhitai Ti600. But after testing, the speed did not drop, and the cache was quite large. We directly increased it to 280GB to test the cache. Huawei’s SSD has a full-disk simulated cache of 250GB, and data exceeding 250GB will experience a decrease in transfer speed, and it will experience a speed drop. A 250GB simulated cache in an empty state is indeed very large, and it is completely sufficient for our daily home use. However, it is still a QLC chip after all.
After the Huawei SSD is half full, the mixed test shows that the 200E SSD only lasted 20GB before the cache was released, which is a common issue with QLC DRAM-less SSDs. That’s just how it is. Don’t understand? Let’s look at the actual performance. When we control the disk and copy 200GB of data, the read speed is relatively stable, basically around 3.6GB, and the entire copy time is around 55 seconds. The 200GB is copied, very fast, no problem at all.
Application Scenarios
If your SSD is already half full, and you copy files again, you will find that it is very easy to release the cache at this time, and the speed will be similar to your home mechanical hard drive when the cache is released. Therefore, the Huawei 200E SSD, because it is equipped with QLC chips, although its controller is strong, the storage chips are too ordinary. The most suitable group of people is ordinary home users who do not store too many things, and the 1TB capacity can be used for several years. So, this SSD is no problem at all, so it feels like the storage chips are holding back the controller.
Self-developed Chips
However, considering the current market environment and what tricks Trump might pull after he comes to power across the sea, no one knows what kind of environment it will be after Trump comes to power. We should encourage any brand or group in China that wants to do something from 0 to 1. Products need to be developed one by one, and the market needs to be developed bit by bit. We also hope that Huawei will release some PLC or higher-performance SSDs in the future, after all, the step from 0 to 1 is the most critical. This is what I mentioned at the beginning of the article, that the price of this SSD should not be too expensive. So, above is the prospective review of Huawei’s new 200E SSD. If you have any opinions on Huawei’s new SSD, you can also leave a comment. I am Teacher Alex, see you next time.
In 1995, Nvidia’s first chip, the NV1, faced numerous setbacks, leaving the company with only 30 days of working capital. By 2024, Nvidia’s Blackwell GPU was in such high demand that the company’s market value had surpassed $3.6 trillion. Also in 1995, Intel held over 75% of the global PC processor market, establishing its leadership in the personal computer market. Fast forward to 2024, Intel’s stock price has plummeted nearly 60% since the beginning of the year, with its market value dropping to over $80 billion, marking the first time in three decades that it has fallen below the $100 billion threshold. The changes in the market values of these two semiconductor giants are a microcosm of the current semiconductor landscape.There is a saying that goes, “People tend to overestimate the changes that happen in a year, but underestimate the changes that happen in five years.” Looking back, the changes in the semiconductor industry in 2024 have been greater than the sum of the changes over the previous five years. 2024 will be a turning point for the semiconductor industry. Why do we say that? Because, as an industry, the semiconductor sector is inseparable from the basic characteristics that define it: division of labor, products, and services. And products like computers and chips cannot be separated from the science behind them. The industry and science are interdependent, and even before the 1970s, the industry was clearly dependent on science. (The controversy over the Silliman affair was a watershed in the relationship between science and industry.) The significant changes in the semiconductor industry this year are the result of a three-way tug-of-war between technology (science), policy, and the market.
01 The Transformation of Semiconductor Companies
In 2024, there have been many news items that have stimulated the nerves of industry insiders. The most prominent is still the surging market value of Nvidia. Microsoft and Apple have been the two companies with the highest market value in the world since 2010. Although the two have been “entangled” in the ranking of “U.S. stock market leader” for more than 10 years, no one else has replaced them. On June 18, 2024, local time, Nvidia’s stock price rose by 3.51%, closing at $135.58, with a total market value of $3.335 trillion, surpassing both Microsoft and Apple to become the company with the highest market value in the world. This is a change that affects the whole world, such as in August 2011 when Apple first defeated ExxonMobil to win the title of the world’s most valuable company, which was also a symbolic moment for technology companies to defeat traditional oil companies. And Nvidia becoming the world’s most valuable company represents a shift in the focus of technology industry development. Traditional fields represented by Apple, such as consumer electronics and software, have led an era in the past, while Nvidia’s first place means that the focus of technology industry development is accelerating towards the AI field. In addition, on November 8th of this year, Nvidia replaced Intel as a component of the Dow Jones Industrial Average. S&P Global stated that the adjustment of components is to ensure that the index has a more representative semiconductor exposure. In fact, this is also proof: AI has truly entered the commercial track, and the impact of AI on the semiconductor industry is growing. In the semiconductor industry in 2024, in addition to the continuously increasing upper limits, there are also constantly refreshed lower limits. There are two giants in the semiconductor industry, which are well-known to everyone: Intel and Samsung. Since 1992, Intel has been the world’s largest semiconductor manufacturer and has been leading for 25 years. Although Samsung’s chip business surpassed Intel for the first time in 2017, it is still a constant struggle for the leading position. This year’s two chip giants seem to be stuck in a “swamp,” constantly struggling. As mentioned earlier, Intel’s market value has fallen due to its continuously losing performance. In the second quarter of this year, Intel’s loss reached $1.6 billion, far higher than the loss of $437 million in the previous quarter. And the latest third-quarter financial report announced its largest quarterly loss in its 56-year history – $16.6 billion (about 118.2 billion yuan). Samsung is also in a difficult situation in 2024. In October, Samsung announced that its third-quarter operating profit was about 91 trillion won, lower than the market expectation of 115 trillion won. Jeon Young-hyun, head of Samsung’s electronic device solutions department, also issued an apology, stating that the company’s performance did not meet market expectations, causing people’s worries about the company’s basic technical competitiveness and the future. As the senior management leading the company’s operations, they will take responsibility. (It seems that South Korea has also learned the apology system from Japan.) Similarly, the stock market reflects the company’s situation. Samsung’s stock price fell to 51,700 won on November 14th, local time, a record low since June 24, 2020. If this trend continues, Samsung’s stock price for the whole year will be the worst performance in over 20 years.
02 Europe’s “Decadence”
The changes in 2024 are not only the obvious corporate rankings but also regional changes. Amid global government attention to the semiconductor industry, there is a region where semiconductors have been declining throughout the year – Europe. Many people may not have noticed, but the data from WSTS cannot be deceived.
We have calculated the chip sales announced by WSTS since January of this year, and so far, the chip sales in Europe for the whole year have been negative year-on-year. Of course, there is also Japan, but Japan’s year-on-year growth has slightly turned positive in August and September. The European semiconductor industry fell into a weak state in 2024. The “three giants” of the European semiconductor industry: Infineon, STMicroelectronics, and NXP, all have poor revenue. Infineon’s revenue in the third quarter reached 3.702 billion euros, a year-on-year decrease of 9%. Currently, Infineon has lowered its performance outlook for 2024, adjusting this year’s revenue expectation to 15.5 billion to 16.5 billion euros, lower than the previous expectation of 16.5 billion to 17.5 billion euros. STMicroelectronics’ net revenue in the third quarter was 3.25 billion US dollars, a year-on-year decrease of 26.6%. NXP’s revenue decreased by 5.4% to 3.25 billion US dollars, slightly lower than the analysts’ expected 3.26 billion US dollars. Nowadays, Europe’s automotive and industrial markets have already shown negative growth.
From a more specific level of observation, the performance of optoelectronics and discrete devices is not satisfactory, the MCU market shows a shrinking trend and has shown negative growth, and the analog market has also experienced a long period of decline.
03 Tracing Back to the Source
The only constant in the world is change itself. This year, there have been so many changes in the semiconductor industry. Let’s trace back to the root causes and examine policies, markets, and technology.
Revenue of the 2024 top 10 global semiconductor companies
2023 ranking
2024Q3 ranking
Company
Q3 revenue in 2024
Year-on-year revenue
5
1↑
NVIDIA
300.4(Q2)
122.40%
6
2↑
SKHynix
116.75(Q2)
124.79%
9
3↑
APPLE
857.77
4.87%
2
4↓
Samsung
560
7.35%
1
5↓
Intel
132.84
-6.17%
4
6↓
Broadcom
130.72
47.27%
3
7↓
Qualcomm
93.9
8.77%
7
8↓
AMD
68.19
17.57%
10
9↑
Texas Instruments
41.51
-8.41%
8
10↓
STMicroelectronics
32.51
-26.63%
Source: Financial Report Semiconductor Industry Vertical and Horizontal Tabulation
The impact of policies on the industry is self-evident. At the policy level, the United States, Europe, Japan, South Korea, and Vietnam have all released semiconductor-related policies in the past two years. However, looking at the current situation, the implementation of the semiconductor policies in the United States and Europe has not been significant.
So far, more than half of the $52 billion subsidy in the U.S. Chip Act has been allocated, with over $35 billion granted to about 26 projects. Yet, the funds seem to be slow in coming, with Intel constantly complaining, “It’s been two years, and we haven’t seen a penny.”
Policy
The U.S. Chip Act is even more precarious after Trump’s potential return to office next year, as he is known to be opposed to the act. In interviews, Trump has bluntly stated, “It’s terrible.” The European Chip Act has not made any waves either. Proposed in 2022, there are not many factories being built in Europe, and Intel’s project has not even started. However, it is important to note that the Chip Act has played a role in attracting investment without actual capital. Companies like Intel, TSMC, Samsung, Micron, GlobalFoundries, and Amkor have already begun constructing factories in various regions of the United States due to the subsidies from the Chip Act. Even if the timeline for financial assistance is extended or the subsidies are canceled, it is unlikely that the partially constructed fabs will become abandoned projects. It can be said that for semiconductor companies, building factories in the United States is already an inevitable action. Although the Chip Act has not been fully implemented and Trump denies its effectiveness, there is no doubt that he supports the repatriation of advanced manufacturing to the United States. This is why, when looking at Intel, we also believe that Intel will not be as bad as it seems. Despite Intel being constantly criticized, we cannot ignore its significant role on the geopolitical stage and as one of the U.S. government’s chips in the semiconductor industry and foreign policy strategies. When considering Intel’s prospects, we must not overlook the elements of U.S. strategy and geopolitics. The semiconductor industry now occupies an important strategic position, which is common knowledge. Regardless of whether it can reach the extreme 3nm process, globally, there are only three companies capable of manufacturing advanced process chips: TSMC, Intel, and Samsung. A significant part of the U.S. Chip Act’s plan is directed towards Intel’s construction of two large factories in Arizona and the building of two more factories in Ohio. Therefore, Intel’s future is still full of Highlights. It is not appropriate to directly assume that it will “decline to the end.”
Market
Why has the term “involution” started to be used domestically in recent years? It is because the pace of technological innovation has slowed down, and with the impact of the three-year pandemic, China’s economic development speed has also slowed down under various pressures, leading to “involution.” The “second curve” theory believes that industrial development has a life cycle, and any growth curve is a parabola that rises and then falls. The secret to sustained growth is to start a new growth curve before the inflection point appears, thus forming a continuous improvement and development trend with the new and old momentum in sequence. We are now in the depression period of the last round of technological and industrial revolutions. To make the economy prosperous again, a new round of technological and industrial revolutions must be ignited.This is the inflection point brought by the cycle. The new round of explosion is undoubtedly in AI, which is also a consensus among many industry insiders.
Tech
AI brings new growth points to the market, with many technologies hidden under AI. Above AI, we need to see the development of technology. The outbreak of AI this time is undoubtedly driven by technology. The emergence of GenAI has been brewing for a long time. And this outbreak of AI has driven other technologies that were brewing. The first representative is: TSMC’s advanced packaging process, CoWoS. The two most concerned products in the semiconductor industry: GPU, HBM, both of these products rely on advanced processes to be produced. And TSMC’s CoWoS packaging plays a very key role, so that some people have begun to jokingly call “TSMC will be the world’s first packaging and testing factory.” Here, the packaging and testing, which originally belonged to the back-end process, has shown a clear trend of front-end. And in the process of HBM suppliers continuously improving the stacking density, the interconnection between the fifth-generation HBM (i.e., HBM4) and the logic layer in the future will be jointly completed by storage giants and foundries. According to SK Hynix, HBM4 will greatly change the industry’s perception of DRAM as a “universal chip,” turning it into a customized storage special process chip. In this process, the related technical know-how will be jointly undertaken by foundries and storage factories, which is also the meaning of TSMC’s “Foundry 2.0” plan this year. The second representative is: the architecture competition, that is, the market competition between x86 and Arm, RISC-V. This year, it is obvious that the market share of Arm architecture chips is increasing. The x86 alliance has made it very clear not long ago: face to face. Although it seems to be a change in the market among the three architectures at first glance, it is actually a thirty-year-long competition between CISC (Complex Instruction Set) and RISC (Reduced Instruction Set), these two chip design philosophies. This competition is essentially an extension of the development of computer architecture as a “science and technology” in the “industry” field. The emergence of AI has given these two design philosophies more application scenarios. From the current point of view, the architecture under the RISC architecture (Arm, RISC-V) indeed has an innate advantage because it has the low power consumption and high energy efficiency that AI naturally needs. This also means that Arm may one day achieve a higher market share, which is driven by both technology and the market.
According to Kioxia (formerly Toshiba Memory), driven by the robust demand for data storage from artificial intelligence, NAND flash memory demand is expected to grow 2.7 times by 2028. for the future needs, Kioxia will introduce new process technologies and further expand production capacity in the coming years to meet the impending surge in NAND demand.
According to Kioxia (formerly Toshiba Memory), driven by the robust demand for data storage from artificial intelligence, NAND flash memory demand is expected to grow 2.7 times by 2028. for the future needs, Kioxia will introduce new process technologies and further expand production capacity in the coming years to meet the impending surge in NAND demand.
Japanese media reports: reports indicate that Kioxia is expanding its production capabilities in Japan to support future growth. In particular, Kioxia is advancing the construction of its Kitakami plant in Iwate Prefecture, aiming to commence production in the fall of next year (2025). Originally, the plant was scheduled to begin production last year, but due to a decline in the industry’s demand for flash memory, its production schedule has been repeatedly altered. The new plant’s capacity, combined with Kioxia’s production capacity in Yokkaichi, will provide Kioxia with sufficient capacity to meet future market demands. In October, due to the negative sentiment of potential investors, Kioxia abandoned its IPO plans. Therefore, this forecast may be aimed at bolstering investor confidence in 3D NAND flash memory (especially Kioxia’s products) and re-emphasizing the plan to start production at the second Kitakami plant. Earlier this year, Kioxia resumed full production at its Yokkaichi and Kitakami plants. Due to weak demand for 3D NAND flash memory used in smartphones, Kioxia had previously reduced production by more than 30% starting from October 2022.
With the decline in flash memory inventory and the recovery of the smartphone and PC markets (Japan was the most evident regional market for global PC recovery in Q3), the demand for 3D NAND also began to recover in the second half of 2023. The demand for storage chips in the terminal equipment market began to stabilize, while the demand for data centers surged with the AI boom. As the global market’s demand for AI servers and data center-grade storage devices continues to grow, Kioxia not only has the production capacity for 3D NAND but also offers enterprise-level SSDs, including flash memory controllers and firmware, to meet the robustly growing SSD demand. Other factors that may drive 3D NAND demand include AI experiences on devices, which also require high-capacity, high-performance local storage.
The Japanese government has provided Kioxia and its partner WD (Western Digital) with subsidies of up to $1.64 billion to expand production capacity by expanding the Yokkaichi and Kitakami plants—since Kioxia is considered a key player in the global 3D NAND market by the Japanese government and aligns with Japan’s strategic goals to revitalize the semiconductor industry.
In October 2024, in the memory semiconductor market, DRAM prices remained stable, while NAND flash memory prices experienced a significant drop close to 30%.
Analysts believe that the decline, primarily in commodity products, is due to weak demand in the PC and mobile sectors.
Data shows that the average fixed transaction price for storage cards and USB commodity NAND flash memory products in October was $3.07, a decrease of 29.18% month-on-month.
NAND flash memory prices had been on an upward trend for five consecutive months since last October, followed by six months of stability, before turning downward in September.
The sluggish demand for TLC NAND Flash chips has led to price drops for SLC and MLC NAND, with the expected decline narrowing in November after significant price drops in September and October.
The average fixed transaction price for PC DRAM commodity products in October was $1.7, unchanged from the previous month.
DRAM prices have been on an upward trend since October of last year, with stability in May to July, a turn downward in August, and a sharp drop of 17.07% in September. Since then, prices in October have remained stable with no changes.
Due to reduced purchasing volumes by buyers and the confirmation of fourth-quarter contract prices, PC DRAM has shown a stable trend.
Retail Investors Trapped by Samsung Electronics
In October, the Korea Exchange reported significant differences in the behavior of retail and foreign investors in the South Korean stock market for the entire month of October.
Retail investors favored Samsung Electronics, purchasing stocks worth 4.2 trillion won (approximately $3.09 billion), while foreign capital showed a strong preference for SK Hynix, purchasing 745 billion won.
On October 2nd, Samsung Electronics’ stock price was 61,300 Korean won, and SK Hynix’s stock price was 169,100 Korean won.
However, by October 28th, Samsung Electronics’ stock price plummeted over 9% to a low of 55,700 Korean won during the trading day, while SK Hynix’s stock price soared, increasing by 15.9% to 196,000 Korean won.
The stark contrast in stock performance reflects different investor sentiments and market dynamics.
From the beginning of the year to today, Samsung Electronics’ stock price has fallen by about 26%, while SK Hynix’s stock price has risen by 30%.
In the first six trading days of October, retail buying was concentrated on Samsung Electronics, with a net purchase amount of 2.15 trillion won. This trend continued throughout the month, with the purchase amount reaching 4.27 trillion won by October 31st.
On the other hand, due to SK Hynix’s outstanding performance, foreign capital has shown a preference for the company.
The rise in SK Hynix’s stock price is attributed to strong third-quarter earnings and a positive future outlook.
Researchers point out that SK Hynix raised its profits for 2024 and 2025 by 2.2% and 4.5%, respectively, in the third quarter, while most other companies, including Samsung Electronics, saw no changes.
Samsung Electronics announced an operating profit of 3.86 trillion won for its semiconductor division in the third quarter, which was below the expected 4 trillion won.
Poor performance led to foreign capital continuously selling off Samsung Electronics’ stocks throughout October.
In contrast, SK Hynix’s strong performance and dominance in the HBM market have bolstered investor confidence.
It is predicted that SK Hynix will continue to solidify its dominant position in the HBM market during periods of slowing demand.
Samsung Electronics’ Storage Profit Margin at Approximately 22%
Comparing the third-quarter performance of Samsung Electronics and SK Hynix, it is evident that there is a significant gap in profit margins for memory business between the two companies.
SK Hynix’s operating profit is around 40%, while Samsung Electronics, although not disclosed, is estimated to be around 22%.
This means that SK Hynix’s leading position is very solid, and its management efficiency is much higher.
The competition between the two around HBM will become increasingly fierce.
Institutions estimate that Samsung Electronics’ storage division’s third-quarter profit was 5.3 trillion won, with a profit margin of around 22%, a decrease of 7% from the second quarter’s 29%.
Samsung Electronics was unable to supply NVIDIA and saw a significant decline in profitability as shipments in the Chinese market continued to increase.
SK Hynix benefited from the high demand for HBM, with third-quarter profits of 7 trillion won and a profit margin of 40%.
In the past, it was common for Samsung to have a profit margin of over 40%, while SK Hynix’s profit margin was around 20%; now, the opposite has occurred.
Samsung Electronics’ overall profit for the DS division in the third quarter was 3.86 trillion won, with a profit margin of 13%.
It is estimated that the profit for other divisions is approximately 5.3 trillion won, with non-storage losses of 1.5 trillion won.
Clearly, Samsung Electronics’ non-storage divisions are suffering significant losses, and the outlook is not optimistic.
Samsung plans to invest a cumulative total of 47.9 trillion won in its semiconductor business by the end of this year.
The storage division will focus on facility investments, shifting towards high-value-added products such as HBM and DDR5, as HBM prices are at least four times that of commodity DRAM products, enabling higher profits.
SK Hynix will have a cumulative investment of 10 trillion won by the end of this year and is expected to have 10 trillion won in equipment investment next year.
Next year’s investment direction will be to transform products, reduce the output of commodity products, and increase sales of DDR5 and LPDDR5.
Equipment investment will increase, but slightly decrease compared to this year.
Samsung Electronics Aggressively Chasing SK Hynix
In order to catch up with SK Hynix in HBM, Samsung Electronics is taking aggressive actions in hopes of regaining the industry’s top position.
It is expected that personnel and organizational adjustments will be implemented as early as this month, leading to significant changes within the company.
Samsung Electronics is focusing on high-profit storage products like HBM and has announced a competitive strategy for its current contract manufacturing.
As an integrated semiconductor company specializing in design, storage, and wafer foundry, there were previous concerns about technology leaks and customer competition, making it difficult to gain the trust of more customers.
Now, Samsung is preparing to abandon its previously held strategy by offering to cooperate with other wafer foundry companies to attract customers to use their HBM, thereby quickly improving storage performance.
On November 1st, at the 55th-anniversary ceremony of Samsung Electronics, the storage division leader stated that without change, there can be no innovation or growth.
The upcoming significant organizational adjustments and personnel changes are highly anticipated.
NAND flash memory chips Market and investment analysis
The plummeting prices of NAND flash memory chips are a complex phenomenon influenced by multiple factors. Here are some potential reasons and impacts:
1. Low Demand**: As you mentioned, low demand in the PC and mobile sectors is one of the main reasons for the decline in NAND flash memory prices. When there is a reduction in new product releases in these areas or a decrease in consumer purchasing power, the demand for storage chips also decreases.
2. Oversupply**: If the supply of NAND chips exceeds the demand in the market, it can lead to a price drop. This could be due to overestimation of market demand in the past or technological advancements that increase production efficiency, thus increasing supply.
3. Technological Advancements**: As technology evolves, producing higher-performance and larger-capacity NAND chips becomes more cost-effective. This can lead to a decrease in the prices of older technology chips as they are replaced by newer technologies.
4. Market Competition**: With more manufacturers entering the market, intensified competition can lead to price wars, which in turn can drive down prices.
5. Economic Environment**: Changes in the global economic environment, such as inflation and trade policies, can also affect the prices of NAND chips.
6. Inventory Adjustments**: Companies may adjust their inventories based on market conditions, which can lead to short-term supply and demand imbalances, affecting prices.
7. Product Lifecycle**: As new products are introduced, older products may be discounted to clear inventory, making way for new products.
The significant drop in the average fixed transaction price of storage cards and USB general NAND flash memory products in October, as you mentioned, could be the result of a combination of these factors.
A substantial decrease in prices can impact the profit margins of manufacturers and may also stimulate demand by offering lower purchase costs for consumers. However, prolonged low prices can affect the healthy development of the industry, causing some manufacturers to exit the market or seek new growth opportunities.
For investors and businesses, it is crucial to closely monitor market dynamics and adjust strategies to adapt to market changes. For consumers, this may be a good time to purchase storage devices, but it is also necessary to consider the risks associated with price fluctuations
According to industry sources, Samsung Electronics’ latest storage chip development roadmap indicates that the company plans to produce at least 400-layer cell vertical stacking vertical NAND by 2026 to maximize capacity and performance.
Samsung Electronics plans to adopt a new bonding technology, creating cells and peripheral devices on separate wafers, and then bonding them. This method will achieve “ultra-high” NAND stacks with large storage capacity and excellent heat dissipation performance, which are very suitable for ultra-high capacity SSDs in AI data centers. This chip is called Bonding Vertical NAND Flash, or BV NAND for short, and its bit density per unit area will be increased by 1.6 times.
Samsung Electronics plans to launch V11 NAND by 2027, further developing its stacking technology, with a 50% increase in data input and output speeds. The goal is to develop NAND chips with more than 1,000 layers by 2030 to achieve higher density and storage capacity.
SK Hynix has also begun the development of 400-layer NAND Flash and is currently developing process technologies and equipment, with the goal of achieving mass production by the end of next year and full-scale mass production by the first half of 2026.
Kioxia has indicated in its technology roadmap that the number of 3D NAND layers will grow at an annual rate of 1.33 times, reaching a level of 1,000 layers by 2027, with NAND chip density reaching 100 Gbit/mm²
This year, as the NAND processes of storage manufacturers have been iterated, the supply of NAND with more than 200 layers has increased, and high-density NAND has gradually made progress in market applications:
Samsung’s 236-layer V8 TLC NAND production has increased significantly, and 290-layer V9 TLC/QLC NAND has begun mass production;
SK Hynix has expanded the application of 238-layer NAND in enterprise-level SSDs and launched 321-layer NAND Flash;
Kioxia and Western Digital have promoted the acceleration of 218-layer BiCS8 NAND in OEM manufacturers, and 2Tb QLC NAND produced using BiCS8 and CMOS bonding technology has begun sampling;
Micron has mass-produced 276-layer G9 TLC NAND and has adopted it in SSDs for client-side OEMs.
Samsung Electronics undergoes four rounds of massive layoffs
Samsung Electronics to Implement Four Rounds of Voluntary Retirement, Contract Manufacturing Team to be Reduced by Over 30%.
According to a high-ranking official at Samsung Electronics on November 2nd, the first round of voluntary retirement will be offered to CL3 (Associate Manager level) employees who have worked for more than 15 years but have not received a rank in the last 5 years. The second round will be for employees who have worked continuously for over 10 years; if the target is not met, the third round will be expanded to all employees. It is reported that the final fourth round will be conducted as part of normal operations. The conditions for voluntary retirement are expected to include a compensation package totaling approximately 400 million won (currently about 2.064 million yuan), which includes a severance payment based on CL3 and four months’ salary of 380 million won.
Especially, the 8-inch contract manufacturing and technology team will see a reduction of over 30%. It is understood that Samsung is considering a proposal for voluntary retirement for unpaid employees. This comes after Samsung Electronics recorded a profit shock in the third quarter of this year due to a decline in competitiveness in its flagship semiconductor business, triggering a crisis theory within the group.
This is interpreted as part of a reform plan to overcome aging business environments and poor performance.
Samsung recently announced third-quarter revenue of 79.1 trillion won, slightly exceeding the expected 79 trillion won, and operating profit of 9.18 trillion won, which exceeded the expected 9.1 trillion won, but was significantly lower than the estimated 11.456 trillion won in operating profit by the London Stock Exchange. Samsung’s Vice Chairman and newly appointed head of the Device Solutions (DS) division, Jeon Yong-hyun, apologized rarely after releasing the performance guidance.
Among them, Samsung’s semiconductor division announced an operating profit of 3.86 trillion won (about 2.8 billion USD) for the third quarter, a 40% decrease from the previous quarter.
Although its memory chip division benefited from strong demand for artificial intelligence (AI) and traditional server products, Samsung stated that “inventory adjustments had a negative impact on mobile demand.” The company said it is also dealing with the issue of “increased supply of mature process products from China.”
Additionally, according to insiders on November 1st, Samsung Electronics has shut down over 30% of the 4nm, 5nm, and 7nm wafer contract manufacturing production lines at its Pyeongtaek 2 (P2) and 3 (P3) factories, and plans to expand the suspension of production to about 50% by the end of the year. The company intends to gradually halt production while monitoring customer orders.
According to reports, Samsung Electronics is preparing to Import its first High NA EUV (Extreme Ultraviolet) lithography equipment in early 2025, marking a significant advancement for the South Korean tech giant in the field of advanced semiconductor manufacturing. This cutting-edge technology, exclusively provided by Netherlands ASML, is crucial for processes below 2nm. South Korean industry observers anticipate that Samsung will accelerate the development of its 1nm chip commercialization.
Each High NA EUV lithography machine is priced at approximately $350 million (about 2.5 billion yuan), significantly higher than ASML’s standard EUV series, which ranges from $180 million to $200 million. The High NA system boasts a resolution of 8nm and a transistor density triple times that of the Low NA system, thus offering immense value.
According to relevant reports, Indicate that Samsung’s first High NA EUV equipment—the ASML EXE:5000 model—is expected to hit the market in early 2025. Given the complexity of semiconductor equipment installation, which often involves lengthy testing phases, the EXE:5000 is projected to become operational in the second quarter of 2025.
High NA EUV technology surpasses existing EUV systems by enabling the creation of finer circuit designs, making it suitable for chips operating below 5nm, such as CPUs and GPUs, which are system semiconductors. While standard EUV is effective for 5nm and below processes, High NA EUV can further achieve circuit dimensions below 2nm, thereby enhancing performance and reducing the number of exposures, which in turn lowers production costs. The latest research conducted by Belgium’s Interuniversity Microelectronics Centre (IMEC) in collaboration with ASML shows that a single High NA EUV exposure can produce complete logic and memory circuits.
This development signifies Samsung’s first foray into High NA EUV technology. Previously, the company had collaborated with IMEC on circuit processing research. Samsung plans to use its own equipment to accelerate the development of advanced nodes and has set a goal to commercialize a 1.4nm process by 2027, potentially paving the way for 1nm production.
Globally, competition among semiconductor giants such as TSMC, Intel, and Samsung is Competition heats up as they vie to secure High NA EUV equipment for processes below 2nm. Intel was the first to obtain the equipment in December 2023, followed by TSMC in the third quarter of 2024. Although Samsung’s order came later, achieving stable production could be the key to determining industry leadership.
Samsung plans to use the High NA EUV equipment it will receive in early 2025 for research purposes and intends to Import dedicated mass production equipment shortly thereafter. In a meeting with ASML in the third quarter of 2024, Samsung indicated that it would reconsider the number of High NA EUV equipment units it plans to purchase, which could reduce its initial order by two units. The company initially planned to Import the EXE:5000 in the fourth quarter of 2024, with follow-up models EXE:5200, EXE:5400, and EXE:5600 to be Imported over the next decade.
SIM card vs SD card are essential in our devices, each serving unique functions. They look similar and can be found together, but their uses are distinct. Therefore, this guide clarifies what each card does, helping you avoid confusion and make rational decisions.
Overview of the SIM Card vs SD card
Subscriber Identity Module (SIM Card)
A SIM card is a tiny chip commonly used in mobile devices. It holds user information and connects to networks. Introduced in 1991, it has been necessary with GSM networks since 1996. Transitioned from standard sizes to micro and nano formats, they now support 4G and 5G.
Secure Digital (SD) Card
An SD card is designed for data storage. First introduced in 1999, these cards were initially made for digital cameras. Also, they have grown in capacity and speed over the years. In addition, SD cards now support HD video recording and large photo storage.
Application
SIM and SD cards are common in many devices. SIM cards are in smartphones and tablets. They connect your device to cellular networks. Thus, this connection is essential for calls and mobile data access.
SD cards are used in different devices to enhance storage. They help store more photos, videos, and apps.
Functions
Sim Card
A SIM card connects devices to mobile networks.
It stores user information securely, including phone numbers.
This connection lets you make calls and send texts.
SD Card
An SD card serves as a storage solution.
It saves different data types, like images, videos, music, and apps.
It helps you keep your device data organized.
SIM card vs SD card: Why Are Users Confused?
Key Differences
An SD card is used to store files such as photos, videos, and documents. A SIM card, however, is focused on connectivity. It links your mobile device to a network for calls and mobile data.
The physical shape of both cards is different. SD cards are rectangular and large, while the latest SIM cards are smaller, with standard, micro, and nano options.
Common Misunderstandings
SIM and SD cards often create confusion because of their similarity, but they have distinct roles. Users sometimes think they serve the same function simply because they fit into digital devices.
The presence of both card slots on their devices creates another misconception. Therefore, they might think the cards are interchangeable due to their proximity. As a result, it can result in improper usage, causing issues with the device’s performance.
Types of SIM Cards and SD Cards
Types of SIM Cards
The type of SIM depends on its storage and the technology it supports.
Standard SIM (Mini-SIM), a pioneer SIM card only found in some older mobile phones, is now obsolete for new devices.
Micro SIM allows the chip to be smarter in size than it had been before. It was used in devices, including the iPhone 4, offering standard SIM card features in tiny form.
Nano SIM: Since 2012, the Nano SIM has been significantly smaller. New smartphones, including the iPhone and modern Android models, use it as a standard. This way, users may get more space for advanced hardware.
Embedded SIM, or eSIM is integrated directly within devices and not in traditional SIM cards. It allows users to change networks without requiring a physical card. Such integration is becoming common in wearables, smartphones, and IoT, supporting multiple profiles on one device.
Universal Integrated Circuit Cards is also known as UICC. With the addition of 3G, 4G LTE, and 5G, this advanced SIM card supports different network carriers to offer secure mobile banking and web browsing. Found in modern smartphones, they offer contactless payments and identity verification features.
SIM Card Type
Dimensions (mm)
Dimensions (inches)
Standard SIM
85.60 x 53.98
3.37 x 2.13
Mini SIM
25 x 15
0.98 x 0.59
Micro SIM
15 x 12
0.59 x 0.47
Nano SIM
12.3 x 8.8
0.48 x 0.35
Embedded SIM (eSIM)
Integrated
N/A
SD Card Types
SD cards come in several types, each defined by unique technology and performance. The main categories are as given below:
Standard SD cards, or SDSC cards, are the first type of SD card with up to 2 GB capacity. These cards use FAT16 to manage basic needs in MP3 players and cameras. However, their small size limits their current usefulness.
High-capacity SD cards or SDHC: SDHC cards support 2 GB to 32 GB storage. They utilize the FAT32 file system for improved file organization. Thus, these cards are ideal for moderate storage tasks like recording HD videos and storing numerous photos.
Ultra-high-capacity SD cards or SDXC: These cards have 32 GB to 2 TB storage. They use exFAT, a file system designed for bigger files, which is great for HQ videos and images. Professionals in media production often prefer them for their speed and storage.
Specialized SD card types: Specialized SD cards include SDUC, with up to 128 TB storage capabilities. Speed classes, from 2 to 10, determine performance, while UHS cards offer top speeds of 624 MB/s for high-performance needs.
How to Use Them on Different Devices?
Using SIM Cards
Shut down your device and use a SIM ejector tool to take out the tray.
Place the SIM card in the tray, gold contacts facing down.
Inject the tray and power on your device. It should automatically recognize the SIM.
You might have to enter a PIN code to activate it.
SIM cards work in tablets and smartwatches, not just phones. These devices have similar SIM card insertion processes.
Using SD Cards
Switch off the device and eject the card slot, usually on the side or back.
Insert the SD card into the slot carefully and put the tray back, until it clicks in place.
Once done, turn the device on, and it should recognize the card.
Note: Formatting an SD card after inserting it ensures smooth performance. However, it removes all data and sets it up for use. Go to storage settings, pick the SD card, and click format to erase all data.
Final Thoughts on Purchasing SIM card vs SD Card
Choose your SIM or SD card carefully by considering the key features that align with your needs.
Factors to Consider
Device Compatibility
Check the needed size, Nano, Micro, or Standard, for SIM cards. Most new phones use Nano SIMs, but older models may need other sizes.
For SD cards, ensure your device accepts the correct SD card format. Many devices support SDHC or SDXC. SDXC won’t work if it only supports SDHC. Moreover, a Class 10 or UHS card is crucial for demanding activities like 4K video or gaming.
Intended Use
Your use case matters. If you travel internationally or frequently switch networks, eSIMs provide flexibility by making network changes easier.
Consider the amount of storage and speed required for your files for SD cards. Obviously, SDXC cards are ideal for high-res media.
Quality and Reliability
Prioritize quality and reliability over cost when selecting an SD card. On this occasion, low-cost cards can cause data issues or slow speeds. Go with brands that have a reputation for reliability.
Check your device specifications to choose the best SIM or SD card and define your storage or connectivity needs.
Conclusion
Knowing how SIM and SD cards differ is vital when choosing them for your devices. With four formats, standard, micro, nano, and embedded, SIM cards link to cellular networks for calls and data. In contrast, SD cards provide storage solutions, holding photos, videos, and applications. Moreover, they have types, like standard SD, SDHC, and SDXC, each for specific storage needs. When purchasing a card, check for compatibility and consider your storage needs.
I find storage space constantly running out in a world driven by smartphones and gadgets. More photos, videos, and files call for more storage. Therefore, this guide will walk you through everything about micro SD cards. In addition, I’ll cover the different types of micro sd memory cards, their uses, and what factors matter when choosing one. Obviously, you’ll see why they’re an effective way to handle your digital files.
Understanding different types of micro sd memory cards
What is a Micro SD Card?
A micro SD card is a mini chip that expands storage for devices with little space. It measures 15 x 11 x 1 mm and is compatible with many digital products.
A Quick History of Micro SD Cards
Micro SD cards have seen many updates since 1999, beginning with the SD card, which was improved on earlier MMC technology.
The 2005 Micro SD card, at 15 x 11 mm, was a major advancement and could be used with SD cards using adapters.
Then in 2006, the SDHC format had a 32 GB maximum storage limit. It was greatly increased to 2 TB with the 2009 SDXC format. While The UHS classes introduced in 2010 provided faster speeds and the Video Speed Class (VSC) improved video recording.
Today’s Micro SD cards offer advanced features, with future developments likely to push these boundaries even further.
Types of micro sd memory cards
Micro SD cards are divided by their speed and storage size.
Types of micro sd memory card Based on Speed
Speed class shows the card’s minimum read/write speeds. Here’s how they differ:
Class 2, 4, 6, and 10: Class 2 is the slowest, suitable for storing photos. Class 4 is slightly faster and good for basic video recording. Class 6 is even speedier and can handle full HD videos. Class 10 is the speediest, ideal for high-resolution videos and advanced applications.
UHS-I, U1, and U3: These are much faster than Class 10 cards. U1 writes at 10 MB/s, while U3 is at 30MB/s. They work wonderfully with 4K video at higher burst shots and fast-write devices like drones.
Video Speed Class (VSC): A VSC V10 card can record 1080p. A VSC V30 is your best bet to shoot in 4K. For professional video, VSC V60 or V90 cards offer the required speed.
Types of Micro SD Cards Based on Capacity
Secure Digital: Originally, SD cards came with a storage limit of 2 GB. They’re not used as much anymore because of this limitation.
Secure Digital High Capacity: SDHC gives a space ranging from 2 GB to 32 GB. These cards can store more than standard SD cards.
Secure Digital Extended Capacity: SDXC cards offer substantial storage, ranging from 32 GB to 2 TB. They are ideal for managing large files, making them perfect for photo and video collections.
Comparing Micro SD Card Types
Speed Comparison
Class
Read Speed (MB/s)
Write Speed (MB/s)
Suitable for
Class 2
2
2
Basic tasks (e.g., storing photos, music)
Class 4
4
4
Full HD video recording
Class 6
6
6
1080p video recording
Class 10
10
10
4K video recording
UHS-I U1
10
10
Full HD and 4K video recording
UHS-I U3
30
30
4K video recording with high bit rates
Video Class V10
10
10
Full HD video recording
Video Class V30
30
30
4K video recording with high bit rates
Video Class V60
60
60
8K video recording
Video Class V90
90
90
8K video recording with high bit rates
Capacity Comparison of Micro SD Card Types
Type
Storage Capacity
Typical Use Cases
SD
Up to 2 GB
Older devices, low-resolution photos, and videos
SDHC
2 GB to 32 GB
Mid-range smartphones, tablets, cameras
SDXC
32 GB to 1 TB
High-end devices, professional cameras, 4K video recording
Price Comparison
A Micro SD card’s cost relates to its speed and storage capacity. Superior performance may require a higher-priced card.
Main Applications and Functions
Micro SD cards are key for expanding your digital storage. They help you keep everything from photos to important documents safe and accessible. Their small size and versatility make them useful in many devices. Here are some common uses:
Smartphones and Tablets
Limited storage can lead to a full device in no time. A micro SD card adds space for apps and media in smartphones and tablets.
Cameras
Expanded storage and faster speeds boost camera performance for photographers and videographers. It makes UHS-I U3 cards suitable for taking HD photos and recording 4K videos reducing missed frames in burst mode.
Gaming Consoles
Many gaming consoles accept micro SD cards. Firstly, it allows players to download more games and save progress. Furthermore, a high-speed UHS-I U3 card is essential for quick loading times and smooth gameplay. Meanwhile, it is reducing lag and enhancing your gaming experience.
Drones
The card’s speed and capacity affect how well a drone records high-resolution videos and photos. For example, a V30 card allows for smooth 4K recording, which is vital for professionals.
Micro SD Cards vs. Other Storage Media
Micro SD vs. SD Card
More compact than SD Cards, MicroSDs are ideal for smartphones, action cameras, as well as drones. Both types increase storage, but microSDs are easier to carry around.
Micro SD vs. CF Card
Professional photographers used to prefer CompactFlash cards for their speed and capacity. However, Micro SD cards deliver even better performance now at a lower price and in a tiny form.
Micro SD vs. USB Drive
These cards offer more convenience than USB drives, fitting directly into common devices. Also, they often provide faster data transfer, especially when paired with compatible hardware.
Conclusion
Micro SD cards are now essential due to rising storage needs. They’re great for photographers, gamers, and those needing more space. Compare the types, speeds, and capacities to select the best fit.
As tech progresses, they will get better. We might see higher capacities, faster performance, and improved strength. Stay tuned for the latest updates in portable storage.
Selecting the right SD card helps to save cost and improve your devices’ performance. Especially when using a camera or camcorder to take videos or continuous shooting, a good SD card really matters. As SD card has been an essential storage for your digital devices by storing data, it is a necessary to know the standard of SD card classes.
How is the type of SD card classes?
Class is a guidance of speed for memory cards launched by SD Association. To distinguish SD cards among different writing or reading speed, there are various types linking to the speed ratings.
Speed Class
UHS Speed Class
Video Speed Class
“Speed Class“ Mark C10
“UHS Speed Class” Mark u3
“Video Speed Class” Mark v90
Speed Class – this is an older generation of speed family, the market used it in last decades. Normally number with a circular “C” symbol is telling minimum write speed.
Class 2 (C2): The minimum write speed is 2MB/s. This is the slowest version for this type, most SD cards in low capacity offers this speed.
Class 4 (C4): 4MB/s by write
Class 6 (C6): minimum write speed of 6MB/S
Class 10 (C10): minimum write speed of 10MB/S. C10 is the main demands for present devices, users prefer fast reaction.
UHS Speed class – It is an updated version of speed; the full name is Ultra-high speed. There is “U” symbol together with number to tell different types. Two main ratings within the UHS speed class are as follows.
UHS-1 (U1): The minimum write speed reaches 10MB/s. Comparing with class 10, many dash cams and DSLR cameras prefers U1 type. As the UHS bus interface provides a sustained write performance, it is perfect for 1080P or 4K video recording.
UHS-3 (U3): minimum write speed at 30MB/s. High-end cameras or drones always take a U3 rated SD card. Regardless of a high write speed, its read can hit up to 104MB/s
Video Speed class – This is the latest feature to support higher video resolution. They are displaying in “V” symbol.
V30: minimum write speed at 30MB/s
V60: lowest writing speed of 60MB/s
V90: minimum write speed at 90MB/s
The importance of SD card classes
When purchasing SD cards, users firstly will check the speed, and then it is the capacity. With a faster writing or reading, a camera can shoot a larger number of photos per minute. Even you purchase a 128GB or 512GB SD card, the recoding time is slow if you ignore the speed. In addition, the parameter of devices must be checked prior to order SD card. As you need to confirm the speed range of your equipment, it will make sure a good performance.
High SD speed classes enhance your devices’ performance
Action photography normally shoots photo in RAW format, each image displays in 41 MP and occupies over 25MB. To avoid any delays on photo loading, U1 and U3 class are the best option.
Speed version tells the cost
Normally we can know the cost range of SD card by capacity and speed. However, high capacity not always deliver high cost if the speed is slow. For example, one 128GB SD card class 10 is much cheaper than U1 or U3 version. Therefore, the lowest price is hard to guarantee high speed.
Speed backward compatibility
Bulk memory cards are able to be backward compatible within its generation. For instance, you can use one SDHC card in SD version slot. The only difference is that the device will work at the slowest speed of memory card. Thus, if you use one U3 SD card in U1 slot, the fastest speed will be same as U1 standard.
SD speed classes for host device
In order to bring users convenience, devices suppliers will mark class symbol on their hosts. It indicates a minimum speed request; the equipment cannot work properly if you use lower speed.
Host device requests for Class 4 SD card: You can use SD speed at Class 4, 6 and class 10
Host device asks for UHS-1 SDHC Card: It means it supports UHS-1 or UHS-3 memory cards.
Device with Video speed class has the same rule request as above. Therefore, it is wiser to check these details prior to order any bulk SD cards.
Benefits from fast SD Cards
As if the devices can support high speed type, SD cards in fast speed offer a good performance. Let’s research into these benefits from different devices.
Game console such as Nintendo Switch: A good game experience is guaranteed if you use a faster card, which is helpful for games loading.
Cameras: Photographers prefer continuous shooting modes. As speedy cards can catch up with an efficient storing, it means numbers of photos can be shoot at once. Especially, when you use camera to take photo in 4K or 8K, a U3 SD or CFexpress card can record extreme high-resolution images.
3D printer and Raspberry Pi: You can save lots of time if you get fast SD card using there.
Notes on purchasing SD memory cards
Obviously, the cost is more if you choose a large capacity and high speed card. However, the purchase instruction should follow up the requests of devices. For example, your GPS device tells class 4 workable for data recording, then class 4 SD card is good and cheap enough for supporting its performance. Likewise, if you are engaging in photography business, a large amount of data transfer is a must for daily job. In this way, you ‘d better consider SD cards in higher speed and larger capacity.
Conclusion
SD speed rating is a key parameter for measuring speed of writing and reading, normally it is expressed as megabytes per second. Class speed on cards is telling minimum speed of recording, as if users know well of these specificat