Joined in 2023 
82 
63 About this deal
Often, fast sequential speeds come at the expense of random read/write speeds, but the A2-class 1066x is an exception; it’s not as speedy as the Integral Ultima Pro Professional High-Speed card below, but it’s faster than the SanDisk Extreme Pro and Samsung Evo Plus on this count, making it a fine all-round performer. If you’re looking for a card that can run apps or cover video on your mid-range or high-end smartphone, you won’t get much better than this. This YouTuber shows you which MicroSD card to choose for your drone, camera or smartphone. All abbrevations and specifications explained.
These standards cover the speed of the interface between the microSD card and your device (or memory card reader), as this can also limit the maximum speed of data transfers between the two. UHS-I has a maximum speed of 104MB/sec, and you’ll usually see a Roman numeral “I” beneath the U1 logo. UHS-II takes that up to 156MB/sec (with data transferring in both directions) or 312MB/sec (with data transferring in only one direction). On top of this, most cards now have a “V” (for video) rating, going from V6 all the way to V90, indicating write speeds of 6MB/sec to 90MB/sec. You need a V30 card to shoot 4K video at speeds of 60 to 120 frames per second, while V60 is the base level for shooting 8K video at 60fps. V90 is theoretically capable of handling 8K video at up to 120fps. However, given that only a handful of professional-grade cameras can offer that, and that they tend to use the larger CFexpress 2.0 cards for storage, this isn’t what you might call a must-have.
Running out of space for your apps, games, videos or photos? Find the speed and capacity you need with our pick of the best microSD cards
When looking for a MicroSD, it is essential to buy one that is just right for its intended purpose. This means that buying a card that’s not just large enough but also fast enough and not automatically the fastest or largest one out there. There are high capacity cards like UHS-II U3 that comes with a steep price but you will not always notice the benefits it offers. We test microSD cards in a high-speed USB microSD card reader, connected to a laptop via a USB 3.2 Gen 2 Type-A connection. We use a combination of the CrystalDiskMark and AS-SSD benchmarks to test both sequential read and write speeds and random read/write speeds. Hardware that supports microSDXC slots will not automatically support every size of card in this format. If you plan on using your microSD card with your PC say for moving files on and off, you need to make sure that your PC supports the file system that the card is formatted with.
With the right card reader, the Professional High-Speed version of the Ultima Pro can be a serious speed demon. With Integral’s own high-speed card reader, we were disappointed with its 99MB/sec and 88MB/sec sequential read/write speeds, but in a third-party high-speed reader, we saw read performance leap to 173MB/sec, with sequential write speeds of 139MB/sec. That write speed is the fastest we’ve seen from a UHS-I card.
About Micro SD
MicroSD comes in 3 formats; SD, SDHC and SDXC, which will determine whether or not the card you’re about to buy will be compatible with your gadget. Both full-sized and micro cards are based on the same spec and each format is defined in the SD spec, howeer the don not work in the same manner. For example, if the card slot on your gadget only supports MicroSDHC card, then a microSDXC card will not work on it.
Great Deal 
New Comment