SanDisk Extreme PRO 64GB SDXC Memory Card up to 170MB/s, UHS-1, Class 10, U3, V30, Black

Product Information

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. This SD card's write speeds can reach 260MB/s, which should handle sequential burst mode and RAW shooting effortlessly. If you like to capture some footage alongside photos, the card's got you covered, too. It boasts a U3 rating, allowing you to shoot 4K video. 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. SD cards have been around for a long time and it doesn’t seem like they’re going to be outdated soon. Even modern devices like drones and handheld gimbal cameras still use SD cards, mostly because of how wonderfully compact and lightweight they are. They’re also hot-swappable, which means you don’t need to be limited by some built-in storage system. It is not just cameras that use microSD cards, of course. And one of the most popular devices to use this memory type at the moment is undoubtedly the Nintendo Switch handheld console, and its baby brother the Nintendo Switch Lite. The slot in memory is not only great for expanding the number of games you carry, but also for taking screenshots and videos of your victories and adventures.Sometimes speed is what you need. The SanDisk Extreme PRO SD UHS-I card delivers the performance to capture stunning, uninterrupted 4K UHD video 1. One thing to be wary of is buying an SD card rated for read and write speeds that are not supported by your device. For instance, mid-range DSLR cameras typically have write speeds in the range of 100 to 110 MB/s. If you had this type of camera, then getting a UHS-II SD card that supports write speeds of up to 150 MB/s would be unnecessary and ultimately a waste of money. Final thoughts 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. CompactFlash used to be the preferred format for higher-end DSLRs. However, with the improved performance of SDHC and SDXC cards (and the introduction of newer memory card formats as well), this memory card format is growing more rare. With shot speeds up to 140MB/s 6 the card is perfect for capturing the action as it happens, without missing a beat.

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 UHS Speed Class 3 designates a performance option designed to support 4K UHD video recording with enabled UHS host devices. UHS Video Speed Class 30 (V30), sustained video capture rate of 30MB/s, designates a performance option designed to support real-time video recording with UHS enabled host devices. See www.sdcard.org/consumers/speed.Rated UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) 2, the SanDisk Extreme PRO SD UHS-I card lets you capture sequential burst mode shots without missing a beat.

The capacity is also questionable. The useable area amounts to 119GB which means around 9GB is lost. OK system files etc. usually take up a little of the space, but surely not 9GB? All three SD cards use the UHS-I bus type, which indicates the type of interface between the card and the device. This also has implications on the maximum read and write speeds that can be supported through the interface. The read and write speeds of all three cards are well below the maximum value. Most devices still use the UHS-I bus type primarily because UHS-II SD cards are still prohibitively expensive. Robustness Full HD (1920x1080) and 4K UHD (3840 x 2160) video support may vary based upon host device, file attributes, and other factors. See: www.sandisk.com/HDJust keep in mind that the pricing for SD cards isn’t linear with capacity. For instance, the 512 GB version of the Extreme Pro is about 4.3 times more expensive than the 128 GB version while the 1 TB version is almost 9 times more expensive. 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 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.