What's faster than a Nikon Z9? Delkin's latest CFexpress cards, of course!

Graphic depicting a Nikon Z9 racing a CFexpress card on a drag strip
(Image credit: Future)

It's been mere weeks since Lexar announced it's launching the world's fastest CFexpress Type B and Type A cards. But not to be outdone, arch rival Delkin Devices has some impressive speed claims for its newly updated Black series CFexpress Type B cards. Where Lexar was making headlines with outright speed claims, Delkin is promoting the minimum sustained write speed of the latest Black-series cards - arguably a more relevant performance metric in real-world use.

Read more:
The best memory cards for your camera
Best CFexpress cards
Best memory card readers

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Ben Andrews

Ben is the Imaging Labs manager, responsible for all the testing on Digital Camera World and across the entire photography portfolio at Future. Whether he's in the lab testing the sharpness of new lenses, the resolution of the latest image sensors, the zoom range of monster bridge cameras or even the latest camera phones, Ben is our go-to guy for technical insight. He's also the team's man-at-arms when it comes to camera bags, filters, memory cards, and all manner of camera accessories – his lab is a bit like the Batcave of photography! With years of experience trialling and testing kit, he's a human encyclopedia of benchmarks when it comes to recommending the best buys.