No camera manufacturer supports CFexpress 4.0 cards, but it doesn't matter!

Graphic of a CFexpress card in space
(Image credit: Future,

CFexpress is still the hottest memory card format on the market, and the most sizzling cards are those built to the CFexpress 4.0 standard. Compared to the last generation (CFexpress 2.0 - there was no 3.0), CFexpress 4.0 cards are twice as fast, with Type B cards topping out at around 3,600MB/s read speed, while write speeds are nudging 3000MB/s.

CFexpress 4.0 Type A cards should also be available soon, as we've seen Lexar announce Type A 4.0 cards at CES, while Nextorage had examples of its Type A 4.0 cards at the CP+ trade show - see video below. Both Type A cards are likely to offer around double the speed of today's offerings, meaning read/write speeds should top out at around 1600-1800MB/s.

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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.