SanDisk Ultra 128 GB microSDXC Memory Card + SD Adapter with A1 App Performance Up to 100 MB/s, Class 10, U1

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ProGrade Digital also has a 160GB Type A card you can buy, but it's not as readily available as this Sony equivalent, and is only marginally cheaper. Delkin has Type A cards coming soon though, so hopefully prices will start to fall further. XQD While the higher capacity cards increase in price exponentially, the 633x appears in sizes as small as 16GB, making it suitable for a wide range of photographers and videographers alike who require all kinds of capacities for casual or professional use. We found its write speed to be a little slow compared to other UHS-I cards in this class range, but it’s good value for money and the V30/U3 class listing means it’s still suitable for up to 4K UHD video recording. Our SanDisk Extreme SD UHS-I V3 tests saw write speeds live up to its claims, matching them almost exactly at 71.6MB/s. But as with most other cards on this list, the read speeds leave a bit to be desired, coming in at almost half the claimed speed, 71.6MB/s. All can be forgiven, though, bearing in mind the extremely low cost of these cards, especially while still offering such high capacity to users at up to 256GB sizes.

Card classifications like V30 or U3 are just categorizations of these speeds. There are three main classes: Speed Class (denoted with a number in a circle), UHS Speed Class (a number in an open beaker-like icon), and a Video Speed Class (V followed by a number). The numbers indicate the minimum writing speed when put under data transfer. Speed class is categorized into Class 2 (a minimum write speed of 2MB/s), Class 4 (4MB/s), Class 6 (6MB/s), and 10 (10MB/s). Choosing the best one for your camera depends on your camera's resolution, buffer size and burst shooting speeds. An additional clue is the UHS Speed Class rating, which is U1 or U3. U1 means it can write a minimum of 10MB/s (like Class 10), while U3 pushes the write speed up to a minimum of 30MB/s. More interested in shooting video? The Video Speed Classes are V6, V10, V30, V60, and V90, with V6 suitable for standard definition video recording and V90 capable of 8K video capture. 4K UHD video recording will require a minimum of V10 ideally, and HD video can utilize V6 or below at a push. How we test SD cards Actual transfer speeds under our testing churned out a write speed of 33MB/s and read speed of 82MB/s; not too bad, but the write speed is close to the minimum V30 classification on the label, so that's worth bearing that in mind if write speeds are important to your work.

If you're often working with high quality 4K video, ProRes video, or RAW photos from cameras such as the Canon EOS-1DX Mark II, then you'll know the value of a card that can keep up with what you're shooting. Taiwanese company Transcend is another long-term player in the memory card market – and still makes many low-capacity cards, meaning they’re accessible to those on a tight budget. As an evolution of the XQD format, CFexpress is one of the best memory card formats around. However, it's currently only available with a limited number of high end cameras (mostly from Canon, Nikon and Panasonic). However, it's worth noting that the release of the Sony A7S III brought a somewhat confusing split into two different variants of CFexpress cards. Up until this point, all CFexpress-compatible cameras used CFexpress Type B cards (yes, 'B' does come before 'A' in this case!). Meanwhile, CFexpress Type A cards are smaller and slower. Crucially, Type B and Type A cards aren't interchangeable, so a camera such as the Nikon Z7 won't be able to accept a CFexpress Type A card. The Transcend SDXC UHS-II U3 is a belter that delivers whether you're shooting raw files or high-resolution video. While the 64GB maximum capacity (the alternative being 32GB) may appear a little modest at first compared with other options here, the performance is anything but, with blisteringly swift read and write times of 285MB/s and 180 MB/s respectively. While CFast cards look similar in size and shape to CompactFlash cards, they're not compatible (so don't try to jam one in your old DSLR!). This new-generation high-speed memory card format will be found in professional stills and video cameras.

One of the most obvious ways to differentiate between memory cards is how much storage they have. A 16GB card might be fine for an afternoon wandering around your local wildlife reserve, but videographers looking to shoot all day could get frustrated with having to constantly swap over cards. As an upgrade to the standard SD card, SDHC (Secure Digital Extended Capacity) cards offer memory capacities between 4GB and 32GB. This makes them great for everyday use and entry-level users who don't have large storage capacity needs. The Transcend did superbly in its speed tests, excelling the claimed write speed (180MB/s) with a whopping 224MB/s, but falling slightly short on the read speed with 224MB/s. Overall, that makes this card an impressive buy at a reasonable cost. This card is ideal for high resolution, rapid-fire stills photography and 8K video, with 4K and HD video being recorded comfortably, too. When you think of a memory card, you'll likely find that the popular SD card format comes to mind. However, if you're using a newer camera, or one of the best professional cameras, then you'll likely need to look for a CFexpress or XQD card. However, Compact Flash, microSD and CFast cards are still all regularly used as well.SIMMTRONICS Memory Cards , WD Memory Cards , 64 GB Memory Cards , Kingston Memory Cards , Storage , Lexar Memory Cards , 128 GB Memory Cards , TUCCI Memory Cards , 32 Memory Cards , Strontium Memory Cards , 256 GB Memory Cards , SanDisk Memory Cards , 1 TB Memory Cards , 16 GB Memory Cards , Samsung Memory Cards , 32 GB Memory Cards , Tiitan Memory Cards , XCCESS Memory Cards , 4 GB Memory Cards , HP Memory Cards However, even the higher capacity offerings – such as this CompactFlash 800x series – are hardly expensive for what’s on offer. Capacities run from a standard 32GB up to 256GB. Specification is also impressive for a budget card, with read speeds of up to 120MB/s and write speeds of 60 MB/s, although actual performance, of course, is affected by camera hardware and software. Durable and reliable, there’s even a built-in error-correcting code to detect and correct any transfer errors. CFexpress Type B