Memory Cards Buying Guide in 2022

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Are you confused about all the memory cards present in the market and which will work with your camera, cell phone, or electronic device? You can learn all you need to know about what to look for when purchasing a new memory card from this memory card buying guide.

Memory cards are used for everything from cameras to mobile phones and a host of other gadgets and other electronic equipment. These memory cards are used to store data even when the power is off. As flashcards have become critical for storing photos, apps, and other programming data, well, nearly everything.

The big problem with flashcards is being able to select one of the best memory cards for use in applications or for other needs. Keep in mind the following points when selecting a memory card: There are many types of memory cards available in the market.

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Types of memory cards

It may seem quite straightforward to browse for a microSD card, whether you require it for a phone, camera, or other devices. But there’s much more to them than you would think. It’s surprisingly simple to fall victim to several pitfalls, like overpaying, receiving subpar service, or having the card completely fail to function on your device. It’s crucial to understand which memory storage is compatible with your gadget and whether your memory card reader will work with your new card.

One of the main problems that arise while choosing memory cards is that there are different types of cards available on the market to buy. For example, SD, Flash, SDHC, SDXC, MicroSD, MultiMediaCard, MiniSD Card, XQD Card, and many more. What is the main difference between them all? For more information about memory cards in general, see the guide below. Although all microSD card types may be used in all microSD card slots, are SD cards all the same?

The variants in microSD card formats are substantial:
MicroSD: It fits in any microSD slot and has a capacity of up to 2GB. It supports SDHC and SDXC hardware and has a capacity of more than 2GB and up to 32GB.
Micro SDXC: It is only supported by SDXC-compatible devices, having a capacity of more than 32GB and up to 2TB. It requires a suitable device and supports cards up to 128 TB.

There are three primary file types:

  • SD
  • SDHC
  • SDXC (or microSD, micro SDHC, and micro SDXC, as the micro and full-size cards, are based on the same specs).
  • SDUC is the fourth format.

SD Memory Card

An SD card, or a Security Digital Card, is used to store additional amounts of information. This card is used for mobile devices such as cameras and smart phones. The SD specification defines each format, however, they don’t all operate in the same manner. These formats aren’t retro-compatible as a result. Newer microSD cards cannot be used with older gear that only supports those formats. The standard SD card has 32mm by 24mm by 21mm dimensions and has a storage capacity of 4GB.

An SDHC Memory Card, or a Secure Digital High Capacity Card

It is an extension of the SD(Secure Digital)card with a storage capacity of 32GB. The 3 versions of the SDHC card, with their physical dimensions, are given here:-SDHC-32mmX24mmX2.1mm.,Mini SDHC-21.5mmX20mmX1.4mm.,Micro SDHC-15mmX11mmX1.0mm.


SDXC is a secure digital extended capacity; this card is used for the largest capacity version of the SDHC cards. An SDXC card has a storage capacity of 64GB to 2TB. Not every device supports SDXC cards, so make sure before you buy it for your device.

Multimedia Card

A Multi-Media Card is also known as an MMC, and it’s a standard memory card used for solid-state storage. MultiMedia Cards can be used in many other devices that can be used for Secure Digital(SD)Cards. MMC is about the size of 24mm x 32mm x 1.4mm. The MMC was originally used as a 1-bit device, but the new version is used for 4 to 8 bits at a time.

A MiniSD Card

It is a flash memory storage device that is mainly used for storing information and all media files. They have a 21.5X20X1.4mm slot and provide 16MB to 256MB of storage. MiniSD cards are 37% of the regular size.

Compact Flash Card (CF)

A CF is a flash memory mass storage device mainly used for portable electronic devices. This device was first invented by SanDisk in 1994. These are not as commonly used as SD cards. These types of cards are mostly used by professional photographers. All these different types of memory cards are used in different types of devices.

Memory Card Size

When you select the memory card to buy, some key points you have to remember are the amount of storage, i.e., the size of the memory. Memory size has increased in recent years. A few years ago, the size of 1GB would have been considered large, but nowadays, 128GB is not so uncommon.

SD Card Speed Ratings

The speed of the card is very important in many applications to specify the data transfer speed of the device. This is very true when writing data at high speeds of 4K videos, which is becoming more common nowadays, even on mobile phones.

Compact Flash Speed Ratings

The Compact Flash does not come under the governance of the SD Association because it has a number of different speed ratings. There are mainly two different types that are seen. Often, both are on the same card.

  • UDMA Rating: is an Ultra Direct Memory Access that allows more quick write and read speeds. It allows the cards to support HD and 4K images. These cards are graded from 0–7, with 7 as the highest performance.
  • VPG: It stands for Video Performance Guarantee, and it’s very similar to the speed of an SD card. The VPG specification is designed for high-end HD video recording. VPG is classified into two categories:-
  1. VPG20 is a minimum of 20MB/S.
  2. VPG 65 is a minimum of 65MB/S.

Choosing the best memory card

While choosing the memory card some key points you have to keep in mind:-


First off, not all of the various microSD card types are automatically supported by devices with micro SDXC slots. Although a bigger capacity card may be built to the same specifications as the Samsung Galaxy S20, there is no assurance that it will function. The Samsung Galaxy S20, for instance, only officially accepts microSD cards up to 1 TB.


You must also verify that your computer is compatible with the file system that the microSD card is formatted with if you intend to use your card with a Mac at any time, such as to transfer data on and off. exFAT is the default file system used by microSDXC cards. It has long been supported by Windows, but just since macOS 10.6.5.

Highest Speed

The ability of the card to transport data swiftly is what sets microSD and SDXC (and SDHC cards, too!) apart from one another.
1. The Ultra High Speed (UHS) bus interface—faster hardware that allows data to transfer at a faster rate—can be supported by the SDHC and SDXC formats. There are three UHS versions: UHS-I (up to 104MBps bus speed), UHS-II (up to 312MBps), and UHS-III (up to 624MBps). Your system must be capable of supporting UHS if you want to purchase the fastest microSD cards and take advantage of their enhanced performance. For instance, UHS memory cards will function in earlier slots but at a lower bus speed of 25MBps.
2. Ultra High Speed (UHS) Class 1 cards can support read and write speeds of up to 104 MB/s. In reality, UHS-1 cards can transfer data much faster than their specifications allow.

The SDXC cards all support read speeds of up to 120 MB/s. UHS-1 cards can have write speeds as slow as 30 MB/s. Theoretically, UHS-II cards can reach 312MB/s. Realistically, these cards are often suitable for reading speeds of up to 300 MB/s and writing speeds of above 250 MB/s.

Micro SD Cards

Micro SD cards are compact versions of the standard Secure Digital cards. These tiny storage chips can hold as much data as a standard SD card (up to 2TB) but in a much smaller package. They come in SDHC and SDXC capacities and UHS-I and UHS-II speed classifications.
Micro SD cards are often used in smartphones and tablets to expand their storage capacity.

Speed Compensation

It’s not just about how much data your card can store, but how fast it can store and move data. Time-saving is a ubiquitous concern nowadays, and cards with faster high speeds will allow you to get more shots in a given period of time, while higher speeds improve planning efficiency by speeding up card-to-computer file transfers.

I hope this article will help you to find the best memory card for yourself. If it was helpful, then do let us know in the comments down below. Also, if you’re interested in similar articles, then here are a few recommendations for you. 
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