Best microSD cards of 2019: Flash memory for cameras, drones and more

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If you're looking for the best SD and microSD memory cards for your camera or smartphone in 2019, then you've come to the right place, as in this guide, we've collected the best memory cards that can boost the storage space of your device.

The best memory cards will have fast data transfer rates which are essential for recording in ultra high definition (4K) resolutions as well, as your camera will be writing a lot of data to the memory card.

Of course, the best memory cards will also provide much needed extra capacity to your devices, allowing you to store more files.

In 2019, there is a huge range of devices that require memory cards, from phones and cameras, to laptops, security cameras, drones and much more - so our list of the best SD cards money can buy can help ensure you get the most out of your device.

In our list of the best SD and microSD memory cards, we look at value for money, speed and capacity, and our price checking software will make sure you get the very price.

The best microSD cards of 2019

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The best SD card you can buy is technically a microSD card, albeit one that can be used full-size when married to the proper hardware. Despite not being the most resilient SD card on the market, the Samsung Evo Plus’ 100 megabyte per second (MB/s) read and 90MB/s write speeds are impressive nonetheless. Not only that, but there is a wide variety of sizes to choose from too, so whether you need 32GB of storage or 128GB, rest assured you’re in good hands.

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If you do a lot of filming, especially in 4K, then you're going to want a reliable microSD card that can write large amounts of data fast, which is exactly what the Samsung Pro+ can do. It features a U3 rating and read/write speeds of 95MB/sec and 90MB/sec. The kind of speeds the Samsung Pro+ microSD card can handle will be largely wasted for day-to-day tasks, such as being installed in a smartphone, but for 4K video, this is a fantastic buy.

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SanDisk claims this microSD card can read up to 95MB/s and write 90MB/s, and in tests it came pretty close to those speeds. This makes it a very fast card, and with smaller files it's even faster, which means this is a great card for action cams, drones or burst photography. Again, it's a bit on the pricey side, but if you don't mind spending a bit above the odds, you'll get a great microSD card for your needs.

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The Lexar 1000x isn't the fastest microSD card here, but it has a lot going for it. For example, its read speeds are still some of the fastest around, and it's priced cheaper than many of its competitors. While it falls short with its write speeds, the difference won't be too noticeable for many people. It also comes with a microSD to USB 3.0 adapter, which makes it easy to transfer your files to a PC.

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As you can probably tell from the number of entrants it has in our best microSD list, Samsung is excellent at producing fast, efficient and dependable microSD cards. The Samsung Evo Select is another great all-rounder that can happily sit in a digital camera, drone, phone or Nintendo Switch games console. While it doesn't necessarily excel in any one task, it is a strong performer that does the job well. Currently Samsung Evo Select microSD cards are only available from Amazon. While that makes hunting for a bargain a bit more tricky, it at least means you can buy with confidence from a reputable seller.

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The SanDisk Ultra microSD is a brilliant microSD card for people who are looking for large capacities, with the latest version offering up to 400GB of storage space. That should give you plenty of room for storing high resolution images and video files. Write speeds are good, but they are not the fastest we've seen. If you shoot in 4K, that might be an issue, but for many people the slightly slower speeds are worth it for the amount of storage space you get.

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If you're looking for a microSD card to put inside an action camera, like the Go Pro, then you want something that can record data quickly, while also being able to withstand drops, shocks and splashes. This is where the Kingston microSD Action Camera comes in - it's designed especially for action cameras. This means it has an incredibly robust design, as well as good read and write speeds. It's a bit overkill if you're just going to use it in a smartphone, so one of the other microSD cards in this list could be better suited to your needs.

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Many microSD cards are low capacity, which is fine if you just need an extra bit of space in your smartphone or tablet, but if you're taking lots of high resolution images, or you want to take advantage of modern smartphone's support for microSD cards up to 2TB in size, then the Integral 512GB microSDXC Class 10 Memory Card is definitely worth considering, offering a huge 512GB of storage space. Of course, you can also get versions with less space if you don't need as much, but for those of you who need to store large files, this is the microSD card for you.

How to choose your microSD memory card

• It's not worth looking for memory cards with capacities smaller than 4GB simply because the price premium you pay for twice or four times the storage is tiny.
• Make sure you include the delivery price when doing the numbers as quite often you end up paying more for the postage than the drive itself, particularly for low-cost models.
• If you plan to opt for large capacity cards (32GB or more), make sure that your device is SDXC compatible.
• If you plan to move files to and from portable devices (tablets or smartphones), consider a microUSB card reader such as the Leef Access.
• Avoid buying your memory cards from vendors with few feedbacks on auction websites as these drives might turn out to be fake. All the vendors listed below are tried and trusted ones.
• For 128GB and above, SD cards are generally cheaper as users usually settle for 64GB as this matches the maximum supported capacity of most portable devices. In general, microSD cards with an adaptor cost less than the equivalent SD card.
• Note that all the capacities are likely to be much less than stated when they are formatted.
• SD cards are usually divided into classes which gives a rough idea of the minimum performance to be expected. A Class 4 card is guaranteed to deliver at least 4MBps while a Class 10 should surpass 10MBps.
• Similarly, many vendors report their speeds in terms of "x" rating which is a multiple of 150KBps (the read speed of a standard CDROM drive). A 100x card can be expected to deliver more than 14MBps.
• If you plan to buy microSD cards simply to store data, don't. Memory sticks, being cheaper and more robust, are a better choice.

• Storage wars: do we really need microSD cards in our phones?

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