Extreme Pro CFexpress Type B Memory Card - 256 GB, 512GB

SanDisk Extreme Pro CFexpress Type B 512GB — enough capacity to skip mid-trip card swaps

The gist: The high-capacity version of SanDisk's CFexpress card, sized for travelers shooting heavy 4K/8K raw video who don't want to juggle multiple cards or a laptop backup routine mid-trip.

• Higher rated speed than the smaller sizes: rated up to 1700 MB/s read and 1400 MB/s write — noticeably faster write speed than SanDisk's smaller-capacity CFexpress cards in this line.
• Real-world transfer speed: independent testing measured about 27 seconds to transfer 200 mixed raw/JPEG files (10.33GB) from a Nikon Z7 II via a CFexpress reader — useful for backing up footage from a hostel or hotel room.
• Room for a whole trip: 512GB holds significantly more raw 4K footage than smaller cards, cutting down on the risk of losing footage by swapping cards constantly.
• Backward compatible with select XQD bodies: useful if you're traveling with an older camera that got a CFexpress firmware update.

Independent testing outlets, including StorageReview and The SSD Review, have benchmarked this card's sustained transfer performance and thermal behavior, generally confirming solid real-world speeds even if they run below the rated maximums.

Best for: travelers on longer trips shooting a lot of raw 4K footage who want fewer card swaps and faster backups. Skip it if: you shoot mostly stills or short clips — the smaller, cheaper capacity in this line covers that fine. Runs ~$479.99 — check the current price before buying.