The Best MicroSD Cards in 2021

MicroSD is the most popular memory card format, by far. You can find MicroSD cards inside cameras, smartphones, gaming consoles, action cameras, drones, and more. The best MicroSD cards have pretty solid read and write speeds and capacity up to 1TB.

Today we lined up best MicroSD cards regarding value, speed, and capacity. You can find affordable cards that are perfect for smartphones, those with fast write speeds that can be used for recording 4K video, and cards that excel in their value offering, sporting affordable price but packing pretty solid specs. Let’s begin.

sandisk extreme microsd uhs-i
  • Capacity Range: 32GB – 1TB
  • Minimum Write Speed: 30MB/s
  • Maximum Read Speed: 160MB/s

If you need a fast but relatively affordable MicroSD Card for your action camera, the SanDisk Extreme microSD UHS-I is an excellent choice. The card’s rated write speed is up to 90MB/s, which is confirmed in tests. Read speed can reach 160MB/s, which also is a superb result.

Combined with its competitive price, this is a pretty good card for recording 4K videos, especially with action cameras thanks to its high capacity. It sports fast write speeds needed for high-def video and is available in a wide variety of capacities, ranging from 32GB to 1TB. No matter how big a memory card you need, the SanDisk Extreme microSD UHS-I has got you covered.

  • Wide Range Of Capacities
  • Solid Performance
  • Suitable For 4K Video
  • Competitive Price
  • A Bit On The Expensive Side

Kingston Canvas Select Plus microSDHC

The Best MicroSD Card For Dash Cam

kingston canvas select plus microsdhc
  • Capacity Range: 16GB – 512GB
  • Minimum Write Speed: 10MB/s (16GB-128GB cards); 30MB/s (256GB and 512GB cards)
  • Maximum Read Speed: 100MB/s

The Kingston Canvas Select Plus is an affordable MicroSD card that features solid read and write speeds. It’s a perfect memory card for dashcams since it’s fast enough to allow 1080p video recording, has an affordable price and comes in capacities up to 512GB.

Official specs list different read and write speeds depending on the capacity so be careful when picking the capacity. Cards with capacity from 16GB to 128GB can reach up to 100MB/s read speed and have a minimum write speed of 10MB/s (V10 speed class). 256GB and 512GB cards come with a write speed that can reach up to 85MB/s and 100Mb/s read speed.

Tests show that a 128GB card can reach more than 60MB/s write and almost 100MB/s read speed, which is faster than promised. Since 256GB and 512GB cards feature faster speed class (v30 compared to V10 on the 128GB card) we are certain they will reach their advertised 85MB/s write speeds.

If you need a dashcam card, this is the one to get. Don’t worry about the capacity since even the slower versions of this card have fast enough write speed for 1080p video recording. We just don’t like the fact Kingston made two versions of the card, which might confuse buyers.

  • Affordable Price
  • Solid Performance
  • Different Capacities Have Different Write Speeds

Samsung EVO Select MicroSDXC

The Best MicroSD Card For Phones

samsung u3 microsdxc evo select card
  • Capacity Range: 32GB – 512GB
  • Minimum Write Speed: 10MB/s (32GB card); 30MB/s (64GB-512GB cards)
  • Maximum Read Speed: 100MB/s

The Samsung EVO Select MicroSDXC is the best MicroSD card for Android smartphones since it boasts large capacities and pretty solid read and write speeds. Do note that the 32GB version of the card features U1 speed class (minimum write speed of 10MB/s) while larger versions (64GB and above) are U3 cards (minimum write speed of 30MB/s). We recommend getting a 64GB card of larger because of faster write speeds.

Tests show that the card (U3 version) can reach up to 100MB/s read and about 87MB/s write speed. When used in a camera write speed can go up to 74MB/s, which is a pretty good result. 74MB/s is enough for recording 4K videos with smartphones since 4K videos recorded with phones can have up to 100Mb/s bitrate. That’s way below the maximum write speed of this card.

  • Affordable
  • Wide Range Of Capacities
  • Excellent Performance
  • 32GB Card Is Slower Than Other Capacities

SanDisk Ultra microSDXC UHS-I SDSQUA4

Fast MicroSD Card Available In A Wide Range Of Capacities

sandisk ultra microsdxc uhs-i sdsqua4
  • Capacity Range: 16GB – 1TB
  • Minimum Write Speed: 10MB/s
  • Maximum Read Speed: 120MB/s

The new version of the SanDisk Ultra MicroSDXC UHS-I card comes with slightly improved transfer speeds, lower price, and higher capacities. The card is available in capacities ranging from 32GB to a whopping 1TB, offering enough storage space for any kind of use case.

The read speed can reach 120MB/s making this card great for smartphones and especially the Nintendo Switch, given the affordable price. You could also use this card for recording 1080p and 4K video on most smartphones and action cameras. Finally, this is a great MicroSD card for photo cameras.

  • Affordable
  • Available In Wide Range Of Capacities
  • Great For Smartphones And Nintendo Switch
  • There Are Better Choices Out There For Recording 4K Video

Lexar Professional 667X MicroSDXC UHS-I/U3

Solid Choice For Recording 4K Video

lexar professional 667x microsdxc uhs-i u3
  • Capacity Range: 64GB – 256GB
  • Minimum Write Speed: 30MB/s
  • Maximum Read Speed: 100MB/s

While the SanDisk Extreme microSD UHS-I is our first choice to use with action cameras, the Lexar Professional 667X MicroSDXC also is a pretty solid choice for action cameras and 4K video recordings. Minimum write speed is 30MB/s and multiple user reviews state that the maximum write speed is about 80MB/s, enough for recording 4K videos on smartphones and action cameras. Read speed can reach up to 90MB/s.

As you can see, the performance is lower than the SanDisk Extreme microSD UHS-I, especially max read speeds. The card is available in three sizes with the biggest being 256GB. When it comes to the price, the card is priced about the same as its main competitor, the SanDisk Extreme microSD UHS-I. While read speed is noticeably faster on the SanDisk card, write speed (the one that’s more important) is just below the SanDisk card. Overall, this is a pretty good memory card but we would rather get the SanDisk Extreme microSD UHS-I.

  • Suitable for 4K Video
  • Competitive Price
  • Solid Performance
  • Slower Than Competition
  • Max Size Is Only 256GB

Silicon Power MicroSDXC UHS-I (U3) 3D NAND

The Best MicroSD Card For Nintendo Switch

silicon power microsdxc uhs-i u3 3d nand
  • Capacity Range: 64GB-512GB
  • Minimum Write Speed: 30MB/s
  • Maximum Read Speed: 100MB/s

The Silicon Power MicroSDXC UHS-I rated at 30MB/s minimum write speed and about 100MB/s read speed. User reviews state that write speed can reach about 76MB/s with read speed going up to 96MB/s. This is a bit below the SanDisk Ultra MicroSDXC UHS-I but the Silicon Power card is a bit cheaper. In fact, considering its specs and the price, this card is the best MicroSD card for most users.

We would recommend this card for Nintendo Switch owners the most because of the affordable price, excellent performance, and wide range of available capacities. Aside from being the best MicroSD card for Nintendo Switch, the Silicon Power MicroSDXC UHS-I (U3) 3D NAND can be used for any purpose aside from, let’s say, 8K video recordings. The only thing to remember is to not buy the faster (UHS-II, V90) version of this card for your Nintendo Switch (both versions can be found on the same Amazon listing) since the console only supports UHS-I interface.

  • Very Good Performance For The Price
  • Suitable For 4K Video Recording
  • Very Affordable Price
  • Available In A Wide Variety Of Sizes
  • None

PNY Elite-X Class 10 U3 V30 microSDXC

Affordable MicroSD Card Suitable For A Variety Of Purposes

pny elite-x class 10 u3 v30 microsdxc
  • Capacity Range: 32GB – 256GB
  • Minimum Write Speed: 30MB/s
  • Maximum Read Speed: 100MB/s

The PNY Elite-X Class 10 U3 V30 microSDXC is a solid MicroSD card that has a competitive price and supports 4K video recording thanks to its V30 speed class. You should be aware that the card achieves different results from test to test, results which sometimes greatly vary.

While it is normal to have different performance when using a card on a PC and when using it in a smartphone (read and write speeds tend to be lower when a card is used in a smartphone), this card shows noticeable variations in different tests performed on computers. Performance varies from 50MB/s to 80MB/s write speed, while read speed hovers around 90MB/s in each test.

Noticeable variations when it comes to write speed can be an issue if you plan using this card in a professional camera or high-end drone to record 4K video. In a smartphone, the card should be enough for 4K video recordings since even 50MB/s is more than enough for smartphone quality 4k videos. If you want a fast card for 4K videos we would rather recommend the Silicon Power V90 card or Lexar Professional 1800x UHS-II. If you want a card for your smartphone, get the Samsung EVO Select over this one.

  • Competitive Price
  • Write Speed Noticeably Varies From Test To Test
  • Other Cards Offer Better Performance At The Same Price

ProGrade microSD Card V60

The Best MicroSD Card For 4K Video

prograde microsd card v60
  • Capacity Range: 64GB-128GB
  • Minimum Write Speed: 130MB/s
  • Maximum Read Speed: 250MB/s

The ProGrade microSD Card V60 Gold is the best bang for the buck MicroSD card you can get for 4K video recording. The card advertises up to 250Mb/s read speed and up to 130MB/s write speed and real-world tests show even faster transfer rates!

All that for a very competitive price and with the choice between 64GB and 129GB capacity. If you need a MicroSD card for your DSLR or a mirrorless camera, this is the best choice out there. We would like to see a higher capacity option but even without that, this is one of the best MicroSD cards we’ve seen on the market.

  • Extremely Fast Performance
  • Perfect For DSLR And Mirrorless Cameras
  • Perfect For 4K Video Recording
  • Excellent Choice For 8K Video Recording
  • Available Only In 64GB And 128GB Capacities

Lexar Professional 1800x microSDXC UHS-II Card

Blazing Fast MicroSD Card With Competitive Price

lexar professional 1800x microsdxc uhs-ii card
  • Capacity Range: 64GB-128GB
  • Minimum Write Speed: 90MB/s
  • Maximum Read Speed: 265MB/s

The Lexar Professional 1800x card is another blazing fast MicroSD card suitable for 4K and 8K video recording and for usage with professional photo and video equipment. The card’s rated at minimum write speed of 90MB/s and maximum read speed of about 270MB/s. Real world tests support these claims, with the card reaching up to 115MB/s write and about 265MB/s read speed.

These are amazing results, but the card’s write speed is noticeably below the Silicon Power Superior Pro. If you need a card for recording 4K or 8K videos with professional cameras, we would rather pick the Silicon Power model. Nevertheless, this Lexar model is still fast enough for 4K and 8K videos, is made by a respectable brand, and it costs virtually the same as the Silicon Power Superior Pro. The only downside is, like with the previous card, limited choice of capacities. The card is available only in 64GB and 128GB.

  • Superb Performance
  • Suitable Both For 4K and 8K videos
  • Competitive Price
  • Silicon Power Superior Pro Is Faster
  • Available Only In 64GB and 128GB

How To Choose a MicroSD Card

When buying a MicroSD card look for its speed class and capacity. Also, make sure to get a card that comes with an SD adapter since most card readers on laptops support only full-sized SD cards. There are a few more points to focus on, which are covered below.

Capacities And Performance Classes

We will just briefly cover these two points here. For a detailed info regarding MicroSD capacities and speed classes, check out our list of best memory cards for cameras.

Back when they were introduced best and fastest MicroSD cards were much slower than flash drives. Today, that’s changed. Fastest MicroSD card can reach more than 100MB/s write speed, which is a pretty good result for a small and portable flash memory.

MicroSD cards have a couple of specs regarding maximum capacity:

  • MicroSD: Max storage of 2GB
  • MicroSDHC: 4GB to 32GB of storage
  • MicroSDXC: 64GB to 2TB of storage
  • MicroSDUC: 2TB to 128TB of storage

The max MicroSD storage is 1TB at the moment, with 2TB cards being planned for the future. At the moment there aren’t any MicroSDUC on the market and even when they show up they will be too expensive for most regular users.

Next, we have speed classes. This is even more complicated than different capacity specs. At the moment, MicroSD cards come with various speed classes, listed below.

First, we have regular speed classes:

  • Class 2 – minimum write speed of 2MB/s
  • Class 4 – minimum write speed of 4MB/s
  • Class 6 – minimum write speed of 6MB/s
  • Class 10 – minimum write speed of 10MB/s

Next, we have UHS (ultra-high speed) SD cards, made to support 4K video recordings, which are divided into two groups:

  • U1 – minimum write speed of 10MB/s
  • U3 – minimum write speed of 30MB/s

Finally, the latest spec released is called Video Speed Class and there you have five different categories:

  • V6 – minimum write speed of 6MB/s
  • V10 – minimum write speed of 10MB/s
  • V30 – minimum write speed of 30MB/s
  • V60 – minimum write speed of 60MB/s
  • V90 – minimum write speed of 90MB/s

Remember that one MicroSD card can have multiple speed class labels. For instance, if a card features a V30 video speed class it also fulfills U3 UHS speed class.

Performance Can Vary Depending On The Device The Card’s Used With

The maximum performance you can get out of a MicroSD card is if you use it on a PC with one of the best memory card readers. When used in a smartphone or in a camera, the same card will have lower performance when used on a PC with a fast SD card reader.

That’s completely normal. If you test the card on your PC and then on your phone, expect a lower number when testing on the phone. But, if a card shows irregular performance when used on the same device, that might mean it’s damaged or simply of low quality.

Nintendo Switch Only Supports UHS-I MicroSD Cards

If you’re in need for a MicroSD card for your Nintendo Switch, remember that the console doesn’t support UHS-II MicroSD cards. UHS-II cards feature the fastest read and write speeds, have a different connector layout than UHS-I cards and can only be used with devices that support them. And Nintendo Switch isn’t one of those devices.

Some MicroSD Cards Models Have Lower Capacity Cards With Slower Performance Than Higher Capacity Ones

Finally, many MicroSD card models come in a variety of sizes. The smallest size is usually 16GB or 32GB. Be careful if you want to buy a low capacity MicroSD card that’s part of a series featuring fast speeds.

For instance, the Kingston Canvas Select Plus microSDHC featured on this list offers a minimum write speed of 10MB/s (U1, V10) on the cards with capacity up to 128GB. On the other hand, Canvas Select Plus cards with capacities of 256GB and 512GB have a minimum write speed of 30MB/s (U3, V30). This isn’t found on each model but is frequent enough to take notice when shopping for one.

About The Author

Goran Damnjanovic

Goran studied psychology but video games and PC hardware were much more interesting. On top of that he likes writing so he decided to become a writer. And it was the right choice. Other than games and hardware, Goran is interested in basketball, Sci-Fi literature, and music.

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