Temperature did not appear to affect performance – and this was tested – but the tests did not wait for the camera to cool down between each trial which would have been optimal. These card readers are designed with high-quality materials that enable faster transfer speeds, ensuring that you don’t have to wait long for your high-resolution photos and videos to transfer.

We rate it as one of the best laptops for photographers, so it shouldn't introduce any bottlenecks in our CFexpress card speed testing. While you will struggle to match the speed claims on the box, and you'll currently pay a premium for this cutting-edge tech, Sandisk's Extreme Pro CFexpress card and card reader set a new benchmark in memory card performance. Digital Camera World is part of Future US Inc, an international media group and leading digital publisher. Gen 2 interface for a maximum theoretical transfer speed of 1250MB/s - plenty fast enough to let a 800MB/s CFexpress Type A card transfer at its maximum speed.ProGrade Digital make a series of excellent stackable memory card readers, many of which I have reviewed on this site in the past. CFexpress cards, like their predecessors the XQD cards, act essentially as SSD drives when put into a card reader. In conducting the tests for the cards hooked up to a computer, we saw some very strange results, eventually figuring out that major differences would be introduced not only by using different card readers, but also even which port we chose to hook it up to on the computer, and also what sort of cord was used.

Reader is expensive, but then it has the quality and speed that means this card reader will last you for years. With this last point in mind, we welcome Sandisk to the CFexpress fray with its Extreme Pro CFexpress Type B Card. The best memory card readers are an easy way to make sure you can always get your images off your camera. What's more, with capacities ranging from 128GB right up to a humongous 2TB, there's sure to be a Delkin Power CFexpress card to suit your storage needs and budget.Sandisk's CFexpress card reader is discreetly styled, but has a pleasantly weighty feel, which combined with its grippy base keeps it anchored to your desk. This not only opens up possibilities for compatibility with newer, faster cards, it could also save you money.

Kingston says the reader gets better performance when used with Kingston memory cards, but it is compatible with SD and micro SD cards from all manufacturers. Even more interesting, that drive performance is only about half as fast as the claimed maximum performance. All this does cost more than other readers on this list, and if you're a "one-card, one-camera" type of photographer, it's almost certainly more than you need.Potential performance as a drive is much higher than actual delivered performance in a camera – by roughly a factor of 2. If you’ve recently invested in a camera with an XQD card slot, or XQD and SD cards slots, the Sony MRW-E90 XQD/SD Card Reader could be a good addition to your kit. Our CFexpress Type B Card Reader MK2 processes data at uninterrupted transfer speeds using a USB-C 3.