Delkin's next-generation CFexpress card tries to woo you with new memory technology


A person inserts a Delkin devices black cfexpress type b 650GB memory card into a digital camera. The memory card's packaging is as shown in the picture on the right.

Delkin Devices has announced a new series of Black CFexpress Type B 4.0 memory cards that rely on a different type of flash memory, which it says makes them as fast as the competition but more reliable.

As manufacturers adopt CFexpress 4.0, which is much faster than the previous CFexpress 2.0 standard, it will be harder for them to differentiate on factors other than price. A brand name goes a long way, but for many photographers and filmmakers, the bottom line will come down to cost.

This is where Delkin hopes to make progress. The company does promise that its new CFexpress card will have capacities up to 1.3TB and read speeds of up to 3,650 MB/s and write speeds of up to 3,250 MB/s (820 to 2,150 MB/s sustained), but that's not the focus of it Marketing efforts. No, instead, Delkin wants photographers to pay attention to the type of flash memory they are using.

This is a bold choice considering that general knowledge about NAND flash memory is not very deep. Still, Delkin is pinning his hopes on so-called pSLC NAND flash memory.

“NAND flash memory is a non-volatile memory chip that retains data even when the power is turned off. It is the core of all memory cards. Manufacturers try to make it denser and smaller so that it can be stored at less cost. More data, but the end result is reduced longevity and performance, which is exactly the opposite of the advantages of NAND memory cards. Photographers and photographers need to store photos and videos quickly, while storing them on a rugged card.” Delkin said.

Delkin device cfexpress memory card with black and yellow design marked "650GB"used for high-speed data storage.
Delkin Equipment

“Due to its incredible durability and performance, SLC flash memory is the sturdiest and most expensive type of flash memory, although its biggest drawbacks are its high cost and relatively small capacity. The latest version of SLC remains The service life is reduced, but the capacity (and price) is increased, called pSLC (pseudo-SLC).

Delkin uses pSLC in its CFexpress Type B 4.0 cards and its line of SD Black V90 memory cards.

“pSLC can read twice as fast as the TLC (three-level cell) or even the QLC (four-level cell) currently used by most card manufacturers. In addition, the write speed can be increased by six times. The service life of pSLC is between 7,000 and Between 28,000 TBW (terabytes written), depending on card capacity, while other flash memory types only support 300 to 2,000 TBW before starting to lose data and slow down. Yes, NAND flash memory doesn't. Lasts forever – the industry isn’t talking about that.

Because of its use of pSLC, Delkin promises its cards will have the highest reliability, performance and durability compared to any other card on the market. This is a bold claim that is difficult to prove or disprove with a traditional memory card test.

Delkin's new cards are available now, starting at $180 for 256GB and $850 for the highest-capacity 1.3TB option.


Image Source: Delkin Equipment



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