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Lexar Professional DIAMOND CFexpressSpecifications CapacityĢ9.60 x 38.50 x 3.80 mm / 1.16” x 1.51” x 0.14” We will be looking at the 256GB model for this review. The Lexar Professional Diamond CFexpress Type-B cards go for roughly $200 (128GB) and $339 (256GB) when on sale. Lexar Professional Diamond Series Pricing and Capacities

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They are also backed by a generous lifetime limited warranty, so they will likely be around as long as your camera (as well as when you decide to upgrade your hardware). With its shock and vibration-proof specifications, and resistance to extreme temperatures, professionals will be able to record video in pretty much any harsh environment. Like previous iterations, these Diamond cards are ruggedly built with durability in mind. Lexar Professional Diamond Series Reliability

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In comparison, the SanDisk Extreme Pro CFexpress Type-B memory card is specced at speeds up to 1,700MB/s read and 1,400MB/s write (512GB capacity), while the Acer CFE100 is quoted at 1,600MB/s read and 1,200MB/s write for the same capacity point.

As a result, Lexar indicates that professionals will experience consistent high performance when recording in any resolution, which will certainly speed up workflows. In addition, minimum sustained writes are expected to stay at an impressive 1,600MB/s. The Lexar Professional DIAMOND CFexpress series offers the best potential transfer rates we’ve seen so far for a CFexpress Type-B card, quoting sequential reads and writes up to 1,900MB/s and 1,700MB/s, respectively, for both the 128GB and 256GB capacity points. The new card is also backward compatible with select XQD cameras, allowing for next-gen performance in these devices.

The new Diamond series, is a fairly big step up as far as performance goes, making it currently one of the best options for power users in the film, photography and media industries working with 8K, 6K, and 4K video. We previously reviewed Lexar’s first CFexpress Type-B card (simply named Lexar Professional at the time) a few years ago, which offered an impressive performance profile to suit most professional needs. The Lexar Professional DIAMOND CFexpress Type-B cards feature PCIe Gen 3×2 and NVMe high-speed protocols.