Memory cards up to. UHS interface support

Before talking about which memory card is better, you should distinguish between the concepts of a flash card, a USB drive and the memory card itself. For most, there is no obvious difference, and we will not go into details, just mention that a USB flash drive or flash drive is intended for storage, exchange of data and is often used as an installer of various. The flash drive connects to a computer or to any other device that provides a connector or adapter for USB. Memory cards are manufactured both on the basis of flash memory and using other technologies and file systems.

As for memory cards, they are in to a greater extent designed for mobile devices such as smartphones, cameras, portable stereos, DVRs, players and much more.

What is a memory stick?

Memory card Is a storage device used to record and store digital information, such as photos, music, documents, programs and other files.

The memory card allows you to expand the factory capabilities of the device - to store and use large amounts of information.

Memory card formats

There are 3 formats of memory cards: SD, SDHC and SDXC, which, in turn, differ in classes (by the speed of transmission / reception of information), by the amount of memory and size. Briefly about each:

1. SD and microSD (Secure Digital Memory Card) are the most common formats, as they work in all devices that support SDHC or SDXC formats. The only thing you need is a Card Reader. Memory capacity up to 4GB.
2. SDHC and microSDHC (Secure Digital High Capacity) - not compatible with devices that support SD card format. Memory capacity up to 32GB.
3. SDXC and microSDXC (Secure Digital eXtended Capacity) are the latest type of memory card that has the largest storage capacity up to 2 TB (2 Terabytes) and at the same time is the most expensive memory card.

Types of memory cardsSDor their form factors:

microSD- represent the smallest memory cards in size: 11 X 15 mm. Used as a memory card for phone, smartphone, tablet and any other devices.

miniSD- today this type of card is less popular than microSD and has a larger size: 20 X 21.5 mm.

SD- the largest view, the size of which is 24 X 32 mm. Such cards are used in more serious and large devices.

Memory card speed classesSD:

An equally important criterion when choosing a memory card is their speed of writing files and exchanging information with the device. The speed of the memory card is responsible for the speed of writing media files to the card, the quality of music playback, volumetric video recordings without audio or video delay, and so on.

How to determine the speed of SD cards?

Information about the speed of SD cards can be found on the memory card itself, it is indicated either in classes (SD Speed ​​Class), for example: SD Class 2, SD Class 4, SD Class 6, SD Class 10.

Or, the speed of the memory card can be expressed in special multipliers: 13x, 16x, 40x, 1000x and higher.

These multipliers are comparable to the speed class and are equivalent, for example:

SD Class 2: write speed from 2 MB / s - multiplier 13x;

SD Class 4: write speed from 4 MB / s - multiplier 27x;

SD Class 6: write speed from 6 MB / s - 40x multiplier;

SD Class 10: write speed from 10 MB / s - multiplier 67x; The following symbols can supplement the designations of the speed of SD cards:

V6 or Class 6: write speed from 6 MB / s

V10 or Class 10: write speed from 10 MB / s

V30 or Class 30: write speed from 30 MB / s

V60 or Class 60: write speed from 60 MB / s

V90 or Class 90: write speed from 90 MB / s

Where, V (V Class) is a Video Speed ​​Class that is capable of recording higher video resolutions. Class V, guarantees minimum performance for video recording. Such cards are used to expand the memory of camcorders and digital cameras.

Of the fastest SD cards, there are cards with a multiplier of 633x, which allows you to write to the card at speeds close to 90 MB / s and reads up to 95 MB / s. Today, there are memory cards that are 6 times faster than this speed, it comes about memory cards using high-speed UHS-III bus. More on this below.

Also keep in mind that in reality the speed may be slightly lower than stated by the manufacturer and be sure to pay attention to what. Why is this happening, you can find out in.

Also, there are SDHC 1 / SDHC 2 and SDXC 1 / SDXC 2 memory cards with increased speed, which can be denoted as UHS (Ultra High Speed). These cards run on the faster UHS bus. They, in turn, are divided into other classes, which are indicated by a number inscribed in the Latin letter U.

Today, there are two such classes on UHS:

Class U1- guaranteed speed from 10 MB / s;

Class U3- guaranteed speed from 30 MB / s.

As you can see, only the minimum threshold value for Class U1 / U3 is indicated, i.e. this class includes many cards that, during use, can operate at different speeds, both 10 MB / s and 100-300 MB / s. These two designations indicate that in this case, the speed that will actually be higher than the declared 10 and 30 MB / s, but not lower.

UHS can have the following data bus marks and metrics:

UHS I- write / read speed, up to 104 MB / s.

UHS II- write / read speed, up to 312 MB / s.

And a new type of tire for today:

UHS-III- record write / read speed, up to 624 MB / s.

How to choose a memory card?

1. Before buying a memory card, you first need to decide on the size of the SD card that you need.
2. Select the required card format, i.e. a size that fits into a memory card slot or (microSD, miniSD, SD).
3. Check the requirements of your device, the quality of shooting and performance. Depending on this, you can already choose required class speed that will work optimally with your device without braking when taking photos, videos, playback and data transfer.
4. The next, narrower parameter, is the additional capabilities of the SD card, such as water resistance, shock resistance, protection against drops. temperature regime etc. This paragraph often applies to professional cameramen, photographers or people who work in extreme conditions not provided with conventional SD cards. For example, a SanDisk SDHC UHS I Extreme Pro Memory Card can operate in temperatures ranging from -25 ° C to + 85 ° C. This card is protected from water, sunlight and shock. Such maps are used in professional technology, in different climatic conditions from the North Pole to the South Tropic. This SD card is extremely expensive but has a lifetime warranty.
5. The last criterion that will be decisive for many is the price of the card. The cost of SD cards should be weighed against their need. Of course, the best cards will be those that are of a higher class, have a high transfer speed and a large amount of memory, but it is worth remembering that such cards may not be compatible with your device. Since large, professional equipment requires expensive, corresponding memory cards for good work, and more simple devices such as phones, mp3 / mp4 players and others can work great on SD Class 2,4,6 cards.

Note! When choosing a particular memory card, focus on the read and write performance. For example, you cannot compare the write speed of one card, say Transcend, which will be 100 MB / s, and the read speed of another card, for example, SanDisk, which will have 160 MB / s, since the read speed is always higher than the write speed. Some manufacturers indicate write speeds, while others indicate read speeds, thereby creating an artificial difference.

Another commonplace but important advice, which must always be remembered - try to buy cards only in trusted stores or company representative offices, since the likelihood of running into a fake is extremely high, and the overpayment for a copy or even a marriage is extremely high, given that brand and quality maps cost about $ 100-500. And professional operators and photographers use several cards at once.

For clarity, we give an example of a photo with symbols and their short designation:

Which memory card should I choose for my camera or camcorder?

For large photo and video equipment, an outdated, but very fast and large card is used, which has been in production since 1994 - CompactFlash. The Compact Flash multiplier can be 800x, 1000x, 1066x, and the data transfer rate is up to 160 MB / s.

These cards are great for SLR cameras, camcorders with high resolution cinematic quality Full HD, 3D-Full HD.

For photos and cameras with HD quality shooting, UHS Speed ​​Class 1 (U1) cards are a good option, at least 10 MB / s.

For more demanding camcorders and cameras with Ultra HD 4K or 2K video recording, UHS Speed ​​Class 3 (U3) cards with a write speed of at least 30 MB / s are best suited.

As a last resort, you can buy a Class 10 memory card with a speed of at least 10 MB / s for recording Full HD (1080p) video.

What class of memory card is best for a smartphone?

It is difficult to tell the difference in memory card speed on the simplest smartphones, and the cheapest memory card is usually used for a regular smartphone. Which class is better for new, more powerful ones is another question, because the latest smartphones have the ability to take photos and videos with Full HD resolution (from 720p to 1080p / 1080i), and this requires cards of at least class 4 and 6 th, at a speed of 4-6 MB / s.

As you can see, it all depends on the needs and capabilities of your device, so it is difficult to say unequivocally which memory card is better for a smartphone. 8+, for example, has the ability to shoot video in 4K UHD format (3840 × 2160), and for this, as you can understand, from the above specification, an Ultra High Speed ​​Class 3 (U3) memory card is required, with a write speed of at least 30 MB / s ... So be sure to consider the specifications of your device and the capabilities of your SD cards.

Technologies for creating SD-memory cards are developing and, accordingly, their volumes, data transfer rates and other parameters increase, and along with them the price grows. SD cards for capturing high quality video at 160MB / s transfer rates are around $ 500.

You should not chase the maximum performance of memory cards if your device performs the simplest functions that SD cards can cope with in the cheaper segment. But if you are looking for an SD card for professional equipment, then in this case you should not save money, because a camera with Ultra HD 4K resolution a priori will not be able to work normally with an SD Class 2 memory card priced at $ 3.

Today's article is a short educational program on SD memory cards... These flash cards are widely used in modern technology: v mobile phones, GPS navigators, cameras and camcorders.

SD is by far the most popular memory card standard today. The overwhelming majority of devices working with memory cards support this particular standard.

SD memory cards come in three different sizes. This made it possible to cover various devices: from miniature audio players to professional video cameras.

So, what are there SD card form factors :

microSD- these cards are intended for use in mobile phones, smartphones, tablets and other compact devices.

- these cards are slightly larger than microSD cards. Until recently, they were used in mp3 players and other portable equipment. But today they have lost their popularity and are used less and less.

SD- maps largest size... They are used in cameras, camcorders, video recorders and other relatively large portable equipment. New generation cards SDHC and SDXC are exactly the same size as SD.

By the way, in the device designed to work with large SD cards, you can insert a card of a smaller form factor. To do this, you need to use a special adapter:But it is better not to do this without unnecessary necessity, because usually microSD cards are significantly slower than full-fledged SD cards.

Exists four generations of SD cards :

• SD 1.0- holds the amount of information from 8 MB to 2 GB
• SD 1.1- up to 4 GB
• SDHC- up to 32 GB
• SDXC- up to 2 TB

In the case of SD cards, there is backward compatibility: i.e. SDXC capable devices understand SDHC and the older SD format (but not vice versa!).

Memory cards differ not only in size or capacity. One of the main parameters is speed exchange of information with the device.

SD card speed manufacturers designate either in the form class, or in the form multiplier:

• SD Class 2- write speed not less 2 MB / with 13x;
• SD Class 4- write speed not less 4 MB / s, which corresponds to the factor 26x;
• SD Class 6- write speed not less 6 MB / s, which corresponds to the factor 40x;
• SD Class 10- write speed not less 10 MB / s, which corresponds to the factor 66x;
• SD Class 16- write speed not less 16 MB / s, which corresponds to the factor 106x.

As you can see, the speed class of the card directly indicates the speed of its operation in MB / s. To find out what class your memory card has - just look at its front: it should be indicated there. For example, in this case, the card tenth grade of speed:

Before buying an SD memory card, you need to know which speed class your device requires. This information should be indicated in the instructions for it.

The speed class is important for those who are going to shoot video. For example, recording Full HD video requires a write speed of 3 MB / sec, which is equivalent to a Class 4 memory card. Using a slower card will cause problems when shooting. However, in some cases, the video stream speed can reach 6 MB / s. Therefore, for video shooting, it is better to buy memory cards starting from Class 6 and higher.

How upload information directly from the SD card to the computer? For this, there are special devices called card readers... The card reader can be either external (connected via a USB connector) or built into a computer or laptop.

After connecting the card reader to the computer, insert your memory card into the corresponding slot. After that, go to Windows in “Computer” - the flash drive will appear in the “Devices with removable media” section. You can open it and perform file operations.

built-in internal card reader

In conclusion, I want to say that when buying an SD card, it is better not to pursue cheapness, but to purchase a card from a well-known manufacturer (I would recommend Transcend). Because losing the captured photos or videos due to a broken card will be very disappointing.

Today, the most popular portable storage devices are flash cards - SD and the more portable version of microSD. Such media are used in mobile devices, players, cameras and a whole list of devices. Despite the fact that all SD cards are similar in appearance, there are still differences. There are three generations of such cards and the oldest cannot function with their newer counterparts. In addition, the cards differ in terms of speed. In this article, you can familiarize yourself with the types of "flash drives" and find out how each class of them works.

First Generation Memory Cards - Secure Digital
Flash cards from the first generation had 2 types, which differed in capacity:

• SD 1.0 - from 8 MB to 2 GB
• SD 1.1 - got to the 4 GB mark.

If you delve into history, you can find out that the first SD cards appeared in the world not so long ago - only 1999. They supplanted flash drives of the MMC type and differed from them in that they had a microcontroller and an area that was specially protected. Thanks to this protection, the threat of hacking the memory card was minimal. If you consider the name, "Secure Digital", it becomes clear that everything was built on security. In addition to the protected area, there was a switch on the left edge of the flash card, which was responsible for write protection. If you move the lever to the “lock” position, you cannot write or delete files.
But there is one important point- An SD card cannot guarantee absolute protection using only a switch. This option must be supported by the gadgets on which the card is installed.

Out of the box, removable media with a nominal value of up to 2 GB are zeroed according to the FAT16 standard, and up to 4 GB according to the FAT32 standard.

SDHC cards or "Secure Digital High Capacity"

This type of drive is the second generation, which appeared in 2006 and acquired the name SDHC. The main difference from the older model was that the card capacity increased significantly. The minimum size was 4 GB, and the maximum was 32 GB.

SDXC cards or "Secure Digital eXtended Capacity"

Today they are the most capacious and fastest flash cards. They first appeared in 2009. The minimum nominal value of such a drive is 64 GB, and the maximum reaches the 2 TB mark. However, many often use flash cards, the volume of which does not exceed 128 GB due to the fact that the larger the volume, the higher the price.
In 2013, an improved version of the SDXC flash card was presented. Its peculiarity lies in the fact that the speed with which it processes data is 312 Mb / s. There are also a number of additional contacts - 17 for the usual form factor and 16 more for microSD.

You need to know!

Removable information storage is not backward compatible with previous models. "Black sheep" can be called a flash card SDXC 3.01, which could be combined with some devices that can read information from SDHC-cards. The past generations are quite successfully combined with the current ones - this means that the gadgets of our time, reading data from SDXC, can freely use the format of SD and SDHC cards.

This problem can be clearly seen on the example of the LG K10 phone, which was presented in 2016. Its technical data indicates that it is able to support a flash card up to 32GB. This means that the device is able to function with SD media, up to 4 GB, and SDHC format, with a capacity of up to 32 GB. But now the SDXC type will not be able to read the device.

Types of SD Cards

There were 3 types of SD cards different formats manufacture:

1) SD - 32x24x2.1 mm (such cards are often used by photographers)
2) miniSD - 21.5x20x1.4 mm (practically useless, because it is extremely rarely used)
3) microSD - 11x15x1 mm (most famous type cards can be found in players, phones and other devices where there is a slot)

It should be noted that microSD can be easily inserted into a larger slot, thanks to special adapters.

Speed ​​characteristics and classes of flash cards

One of the main characteristics of a flash card is the speed at which it reads data. A comfortable video display, without frame drops, listening to audio recordings and much more depends on the speed. The number of the lowest promised data writing speed is indicated directly on the body of the card itself, use a capital C as a guide.

Some vendors write the minimum speed of the flash card as before - the numbers multiplied by "x". "X" is 150 kbps. This speed is the minimum to play a CD. This speed was generally accepted and as soon as SD cards began to appear, it was considered optimal.
A separate item deserves a series of flash cards that support Ultra High Speed ​​data transfer buses. The memory card data has acquired a redefined assignment of several contacts in order to ensure the exchange of data in 4-bit.

The first generation of cards had two types:

1) UHS-I Class 1 - the lowest data write speed was 10 MB / s. The highest speed reached 50/104 Mb / s. It depended on the build.
2) UHS-I Class 3 - had a guaranteed write speed of up to 30 Mb / s, maximum - 50/104 Mb / s.

The second generation was able to demonstrate the brightest speed indicators in the entire history of the existence of SD cards. They had a UHS-II Class 3 marker, this was a guarantee that the speed when writing data would be stable - at least 30 Mb / s, the maximum reached 156/312 Mb / s, again, everything depended on the architecture. A certain UHS class memory card has a 1 or number on it that is framed by the letter “U”.

Brief scenarios for using memory cards of various speed classes

The full potential of UHS-compatible removable media can be unleashed on devices with a compatible controller. In the worst case, the memory card will function like a regular SD card at low speeds.

Worth knowing

Before you buy a flash card, first of all, find out what the maximum volume your smartphone can handle. For example, the maximum allowable memory card size in budget phones and other similar devices is 32 GB. At the same time, cameras and camcorders of our time are able to accommodate an SD card of about 2 TB.

The price of flash cards completely depends on its capacity, speed parameters and, of course, the brand plays an important role. Some manufacturers are so confident in their products that they offer a lifetime warranty. Such an action significantly tilts the balance towards the world famous vendor. In addition, the removable drives of trusted brands are protected from X-ray and electromagnet radiation. This can save you at the airport. And there is protection from water, shock and other adversity. This is an important aspect when choosing a flash card for those who like an active lifestyle.

When using the memory card, do not fill it all the way. Such procedures can cause not the most pleasant consequences - formatting of some or all files. It is also possible to damage the "stuffing" of the flash drive. If information can be returned using utilities, then no one can restore damaged memory cells to you. In extreme cases, you need to contact the service center.

How to choose an SD and microSD memory card: An overview of the classes and formats of SD cards

Before you start studying detailed information about the SD card, you have to find the correct format. It can be different depending on the device:

• Smartphones in the vast majority of cases only support microSD cards. They are smaller than classic memory cards.
• At the same time, with the help of a special adapter, you can use microSD cards in a computer or camera.

Sizes of SD cards for different devices

The most important criterion, of course, is the capacity of the memory card. And here you will find real torments of choice:

• Up-to-date the lineup memory cards range from 2GB to 512GB. Amateur photographers will need a card that can store at least 32GB of data. If you want to store music or movies on the card, you should opt for even larger options.
• Here it is necessary to take into account the importance of some abbreviations printed on the card: initially SD cards (Secure Digital) offered capacities up to 2 GB. SDHC cards (High Capacity) have made it possible to store up to 32 GB. SDXC cards (Extended Capacity) can reach capacities up to 2TB. In practice, however, the largest SD card models are limited to 512GB.
• Of course, along with the capacity, the cost of the card also grows: for example, if a 4 GB SD card can be purchased for 400 rubles, then for a large 128 GB model you will have to pay at least 3200 rubles. Detailed information about memory cards you will find in our.

We buy SD cards with a higher data writing speed

As soon as you start copying the first files to your SD card, the second one will make itself felt. the most important criterion: data writing speed. However, it is important to understand the difference between minimum write bandwidth and theoretical performance.

• The minimum bandwidth when writing data follows from the SD card class. In this case, the number denoting the class describes the write speed in MB / s. Thus, a Class 6 memory card offers a minimum write speed of 6 MB / s. However, such indicators no longer meet the requirements. today... If you are buying a new SD card, you should be using at least Class 10 models.
• It should be borne in mind that the actual write speed of Class 10 memory cards is significantly higher than the minimum. throughput... The current top-end cards offer an average speed of reading and writing data above 90 MB / s.
• This is what you should be guided by when buying an SD card. Models with speeds below 90 MB / s in most cases are not worth your money, since current Class 10 cards can be obtained for less than 1,500 rubles.
• With all this, you need to be sure that your device also supports high data processing speed. Especially older camcorders may not keep up with the transfer rate of newer SD cards. Then there is no point in overpaying. But for current models of smartphones or other devices that were released no more than two or three years ago, class 10 cards will be the right choice.

If your new SD card is not recognized, this is not a cause for concern.

Modern flagship and even budget phones are equipped with large built-in memory. They can even have 8-16 GB of memory (and flagship smartphones and all 128 GB), and this does not include the flash drive. However, this is not enough for many users. However, there is a good solution - choose a memory card for your smartphone. Which one is another question. To do right choice, you need to know what cards are, how fast they work, etc.

What is it for?

The memory card is for expanding storage space. If music, photos or videos do not fit on the "native" memory of the phone, then it is appropriate to think about which memory card to choose for your smartphone. Most phones have special connectors for connecting such cards. They all support MicroSD format. Cards of this format are compact and are most efficiently integrated into the case itself, which is why they take up little space. V certain models universal slots are used, into which you can insert either a SIM card or a USB flash drive.

So users can choose: either expand the memory, or use two memory cards at once. Smartphones with such a solution are often budgetary. Before choosing a card, you need to find out if the phone supports the types you want flash drives. This is indicated in the technical specifications for the phone and on the manufacturer's website. Also on the case, in the area of ​​the flash drive slot, the format for the card that can be used is indicated.

Memory types

When choosing the best card memory for a smartphone, first of all, you need to consider the type. There are only 3 standards:

1. MicroSD - the capacity of these cards does not exceed 4 GB.
2. MicroSDHC - up to 32 GB.
3. MicroSDXC - up to 2 TB.

The latter type of card can be inserted into a standard microSD slot, however it must be supported operating system... Therefore, when choosing such a drive, it is imperative to clarify whether the phone's OS supports memory cards of this standard. Most often, drives of this type are supported by flagship phone models, budget employees are limited to the MicroSDHC standard.

Recording speed and class

The higher the class of the card, the faster the data exchange between devices (writing and reading files) will be. On this moment there are cards with three recording classes:

1. Speed ​​Class (letter C). The write speed can vary from 2 to 10 MB / s.
2. UHS Spees Class (U). Speed ​​from 10 to 30 MB / s.
3. Video Speed ​​Class (V) - 6 to 90 MB / s.

The final speed depends on the class. For example, a Class 10 memory card (Video Speed ​​Class 10) has a write speed of 10 MB / s or more. Such flash drives are used to record videos in FullHD format, as well as for streaming.

Volume

Modern drives can range in size from one gigabyte to two terabytes (2000 GB). Of course, the price of memory cards strongly depends on the volume. However, when choosing, it should be borne in mind that phones have restrictions on the amount of drives that can be connected to them. Many budget smartphones designed to connect cards up to 16 GB. Therefore, they will not be able to work with a 32GB drive. Hence the misunderstanding among people whose smartphones cannot see memory cards. The characteristics must indicate with what volume the phone can work with a card. And if you install a 32 GB flash drive in a phone that supports only 16 GB, then it simply won't recognize it.

Manufacturers

There are many second-rate manufacturers who market their products. However, the largest part is occupied by well-known and well-established companies:

1. SanDisk.
2. Kingston.
3. Transcend.

Silicon Power products enter the market confidently enough, offering users inexpensive, but sufficient good decisions... Speaking about which memory card to choose for a smartphone, first of all, we can recommend the above four manufacturers.

File system

Most flash drives are formatted in the FAT32 file system. It has the disadvantage that it does not support volume sizes larger than four gigabytes. This means that an attempt to record a movie of at least 4.5 GB in size on a USB flash drive will fail. The maximum file size cannot exceed 4 GB, which is bad, as it implies a number of restrictions for users.

Another file system of drives is exFAT, and there is no such limitation. However, the device itself must support a similar file system in order to be able to read a USB flash drive of this format. Otherwise, you will face a situation where the smartphone does not see the memory card. In the characteristics of the phone, this is also indicated without fail.

Durability

All information on media cannot be stored forever, since they have a certain service life. The average media resource is 10,000-1,000,000 rewriting cycles, although in practice the figure is lower. In general, the longevity of a MicroSD drive depends on usage and build. Models from unknown brands do not lend themselves to strict production control, so they can break down after 2-3 weeks of operation. Therefore, if you do not know which memory card to choose for a smartphone, then it is better to give preference famous manufacturer, let the price be slightly higher.

Rating of the best

Considering the fact that almost all phones can shoot video in FullHD format, you need to choose a class 10 memory card. The best are the following:

1. ADATA Premier (available in the range of 8-128 GB).
2. Transcend MicroSDHC (8-256 GB).
3. SanDisk Extreme (16-128GB)
4. SanDisk Extreme Pro (64-128GB)
5. SanDisk Ultra (8-128GB).
6. Memory cards for the Samsung EVO smartphone (16-128 GB).

The above cards have an almost ideal price-quality ratio, they satisfy customer needs, collect positive reviews, work great and allow not only saving photos, but quickly recording videos in FullHD format.

ADATA Premier

The price of the ADATA Premier memory card will be 500 rubles for the 16 GB version. Flash drives of this series have a good price with high quality, are reliable and durable, and perform well when recording video in resolution up to FullHD.

In general, this line contains memory cards with a capacity of up to 128 GB, but their price is higher. And they are only suitable for those users who store a lot of data on the phone.

1. Protection.
2. Reliability.
3. Lifetime warranty on the card from the manufacturer.
4. High write speed.

Disadvantages:

1. The ruler is limited in terms of memory capacity.
2. Higher price than comparable drives.

Transcend MicroSDHC

For 400 rubles, you can purchase a model with a memory capacity of 16 GB. Its characteristics correspond to the previous memory card in the rating, it has a high data exchange rate. However, the entire line has a size limit of 256 GB. In general, Transcend has long established itself as a reliable manufacturer of high-quality devices, so there should be no problems with their flash drives.

Advantages:

1. Reliability.
2. High write speed.
3. Lifetime warranty.

Sandisk extreme

The cost of this card is 2,100 rubles, and this is for a model with only 32 GB of memory. A very expensive but also durable card that differs from the standard models. It is shockproof, waterproof, and X-ray resistant. It is appropriate to use it in extreme conditions. The maximum card size of this line is 128 GB.

Price is the main disadvantage of this model. but specifications fully justify the high price.

1. Lifetime warranty.
2. Recording speed.
3. The ability to apply under any conditions.

1. High price.

There is also a more advanced version of this card, the SanDisk Extreme Pro. It differs from the previous one (without the Pro console) in a higher recording speed, which allows you to record video in better quality and faster. But the fact is that the entire line is represented by only two models - with a capacity of 64 and 128 GB. Few users are willing to purchase it. Most often, there is simply no need for such protection, which a flash drive possesses.

SanDisk Ultra

For only 350 rubles, you can buy an inexpensive and good flash drive for your smartphone. She has classic characteristics, low price and the manufacturer is reliable and well-known. With its parameters, a flash drive is cheaper than other models, while the model range includes cards with different memory sizes, so there is plenty to choose from.

Samsung EVO

These cards from Samsung cost an average of 500 rubles (the price for the version with 16 GB of memory), they have water and thermal protection, and are also protected from magnetic fields and X-rays. At the same time, the exchange rate is quite high. As for the price, it is slightly higher than the cost of similar models, however, the price tag is due to the presence of protection.

Silicon power

For a flash drive with 8 GB memory from Silicon Power, you will have to pay 550 rubles. It is expensive for such a volume. In addition, the flash drive belongs to the 4th class, so the write speed will be low. However, it is not intended for recording FullHD video, it is better to save photos and audio files on it.

Pros - durability. The memory card is actively used in phones for which high technical requirements... The disadvantage is the price. With its characteristics (low write speed, small volume), the price of 550 rubles seems unfair. Therefore, Silicon Power models can be recommended as a last resort. When choosing, you first need to consider the models of manufacturers that are higher in this rating.

Conclusion

As a conclusion, you can answer common questions. In particular, many users want to know if cheap memory cards can be bought. In principle, it is possible, but it is desirable to store on them only the information that you do not mind losing. The risk is great, so it is advisable to "throw off" important documents in parallel to other media.

It is also completely unnecessary to look for a class 10 memory card in order to insert it into an inexpensive smartphone. If the phone does not know how to shoot video in FullHD resolution, then a regular class 4 memory card is enough for it. As for the volume of the card, everything is individual here. Many users do not need a flash drive at all, since the built-in memory is enough for them. For others, even 128 GB of memory is not enough due to the large number of stored photos, music and video files. But in any case, when choosing a card, you need to take into account the maximum volume the smartphone supports. There is no point in trying to shove a 32GB card into your phone if it supports a maximum of 16GB.

And the last thing. Almost all smartphones with a memory card slot support drives from all manufacturers. There is no such thing that, for example, Samsung phones only support cards from Samsung.