Post by account_disabled on Feb 1, 2024 4:03:48 GMT -5
Texar is the first memory card manufacturer to support the new and much faster CFexpress 4.0 standard for Type-A cards, a format used exclusively by Sony in its high-end Alpha mirror cameras. In a blow to Sony, Lexar is releasing a Professional CFexpress 4.0 Type-A card under the "Gold" series brand, although a release date has not been revealed. The company says that thanks to PCIe Gen 4 integration, which is the basis of the CFexpress 4.0 standard, the new Type A cards will have a maximum read speed of 1,800 MB/s and a maximum write speed of 1,650 MB/s. Lexar hasn't shared a minimum sustained transfer speed, but it boasts a Compact Flash Association (CFA) Video Performance Guarantee (VPG) rating of 400, which means the card's sustained performance will never drop below 400MB/s.
While not that impressive on Fax Lists paper given the peak read and write speeds, it's currently the highest CFA can confirm, and real-world performance is likely to be even higher. Previous CFexpress Type A Lexar cards , also offered under its Gold brand, only promised transfer speeds of up to 900 MB/s, so the switch to CFexpress 4.0 resulted in double the read speed and nearly twice the write speed. At the time of publication, no other Sony camera - including the new a9 III - is able to take advantage of this new speed. Similarly, there are currently no memory card readers that can use these new peaks either. The latter is likely to change before Lexar brings its new card to market, but CFexpress 4.0 still needs industry-wide camera support.
Fortunately, it's backwards compatible, so the new cards will work just fine in cameras currently on the market. Lexar CFe Type B 4.0 Lexar also announced a new CFexpress 4.0 Type B card, joining ProGrade Digital and OWC in supporting the format. The new Lexar card presented in the Diamond series promises a maximum read speed of 3,600 MB/s and a maximum write speed of 3,300 MB/s. It is also VPG 400 certified. For reference, these previous Diamond series cards only promised transfer speeds of 1,900 MB/s . Finally, a new UHS-II microSD card designed for applications like GoPro is also on the way, promising a maximum read speed of 280MB/s and a maximum write speed of 180MB/s.
While not that impressive on Fax Lists paper given the peak read and write speeds, it's currently the highest CFA can confirm, and real-world performance is likely to be even higher. Previous CFexpress Type A Lexar cards , also offered under its Gold brand, only promised transfer speeds of up to 900 MB/s, so the switch to CFexpress 4.0 resulted in double the read speed and nearly twice the write speed. At the time of publication, no other Sony camera - including the new a9 III - is able to take advantage of this new speed. Similarly, there are currently no memory card readers that can use these new peaks either. The latter is likely to change before Lexar brings its new card to market, but CFexpress 4.0 still needs industry-wide camera support.
Fortunately, it's backwards compatible, so the new cards will work just fine in cameras currently on the market. Lexar CFe Type B 4.0 Lexar also announced a new CFexpress 4.0 Type B card, joining ProGrade Digital and OWC in supporting the format. The new Lexar card presented in the Diamond series promises a maximum read speed of 3,600 MB/s and a maximum write speed of 3,300 MB/s. It is also VPG 400 certified. For reference, these previous Diamond series cards only promised transfer speeds of 1,900 MB/s . Finally, a new UHS-II microSD card designed for applications like GoPro is also on the way, promising a maximum read speed of 280MB/s and a maximum write speed of 180MB/s.