SanDisk CFexpress 4.0 Type B targets 12K capture

Fast pro media built for demanding cinema and mirrorless workflows

SanDisk has introduced its Extreme PRO CFexpress 4.0 Type B card as a high-end storage option for professional video and stills shooters who need very fast throughput and dependable sustained performance. The card is positioned squarely at cinema and mirrorless users, with SanDisk pitching it for 4K, 6K, 8K and even 12K capture. That alone tells you where this product sits in the market: it is not everyday removable storage, but premium media for creators working with heavy codecs, long record times and high-resolution production.

The headline figures are strong. SanDisk quotes sequential read speeds of up to 3700MB/s and sequential write speeds of up to 3500MB/s, enabled by PCIe Gen4 technology. For filmmakers, the more important claim may be the sustained write performance: SanDisk says the 2TB and 4TB versions can maintain minimum sustained write speeds of 3100MB/s for long recording sessions, while the broader range carries Video Performance Guarantee ratings that scale by capacity. According to the official product page, 1TB to 4TB cards are rated VPG1600, while 128GB to 400GB models are listed with projected VPG800 and VPG400 support.

That makes the range especially relevant for photographers and cinematographers using hybrid cameras that increasingly blur the line between stills and cinema. Burst-heavy wildlife and sports photographers will appreciate the fast read and write ceiling, but the larger story is clearly video. SanDisk is framing this card around uninterrupted high-bitrate recording, with enough bandwidth for demanding internal workflows and enough capacity to suit longer takes. Available capacities shown on the official page run from 128GB through 256GB, 400GB, 1TB, 2TB and up to 4TB.

SanDisk has also paid attention to reliability in the field. The company says the card uses SmartIdle technology to reduce power draw when a compatible camera is idle, which is designed to help prevent overheating during demanding sessions. Physically, the card is rated to survive drops of up to 5 metres and resist bends up to 70 newtons. Those claims, together with a lifetime limited warranty, underline that this is intended as a professional tool for repeated on-set use rather than a consumer accessory. Compatibility is listed for cinema cameras, mirrorless cameras and CFexpress Type B card readers.

In practical terms, the new Extreme PRO CFexpress 4.0 Type B looks like a serious option for creators building workflows around the latest high-resolution bodies. It combines headline-grabbing speed with genuinely useful pro-oriented details, especially on the higher-capacity models where sustained write behaviour matters most. For photographers shooting demanding action and for filmmakers working with large formats and long takes, SanDisk’s new card appears designed to remove storage as a bottleneck and let the camera do its job.

Specifications:

Form factor: CFexpress Type B.
Capacities listed: 128GB, 256GB, 400GB, 1TB, 2TB and 4TB.
Sequential read speed: up to 3700MB/s.
Sequential write speed: up to 3500MB/s.
Minimum sustained write speed: up to 3100MB/s on 2TB and 4TB models.
Video Performance Guarantee: VPG1600 on 1TB to 4TB; projected VPG800 and VPG400 on 128GB to 400GB.
Dimensions: 29.67mm x 38.56mm x 3.75mm.
Weight: 9.5g.
Durability: drop resistance up to 5 metres; bend resistance up to 70 newtons.
Warranty: lifetime limited warranty.

Price and Availability:

The SanDisk Extreme PRO CFexpress 4.0 Type B is listed on SanDisk’s official UK and US product pages in capacities from 128GB to 4TB, but at the time of checking both storefronts were showing Notify Me / email notification messaging rather than live purchase stock – I’ll keep you up to date when this changes.