Sony CFexpress Type A 640GB Memory Card 800MB/s Read 700MB/s Write

640 GB CFexpress Type A card

This 640 GB CFexpress Type A memory card delivers read speeds up to 800 MB/s and write speeds up to 700 MB/s. It targets professional photographers and videographers using compatible Sony cameras such as the FX6, FX3, a1, a7S III and a7 IV. The high capacity supports extended shoots without frequent card changes. Its TOUGH construction adds shock and temperature resistance for demanding field conditions.

Replacing slower SDXC media

The card outperforms even the best SDXC cards, clearing the camera buffer far faster for responsive continuous shooting. The jump is worth it when you need uncompressed continuous RAW capture for fast action such as motorsports or wildlife, or when recording high-bitrate video like 4K 120p. VPG certification guarantees sustained write performance for stable video recording.

Check your camera slot and workflow

Before ordering, verify that your camera body accepts CFexpress Type A cards; SD-only slots will not work. Ensure your card reader and editing system can handle the 800 MB/s read speed to avoid bottlenecks. Confirm that your project demands the 640 GB capacity and sustained write speed, as lower-spec media may suffice for lighter workloads.