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Two black rectangular CFexpress Type-B cards side by side

SanDisk

SanDisk Extreme PRO 256GB CFexpress 4.0 Type-B memory card twin pack

SKU CH-BXYG-6HEMQ

Twin-pack CFexpress 4.0 Type-B cards deliver 3700 MB/s read and 3500 MB/s write speeds with 256 GB each for 8K and 12K capture

  • Unmatched workflow speed with up to 3700 MB/s read and 3500 MB/s write
  • Ample 256 GB capacity for extensive high-resolution projects
  • Guaranteed 900 MB/s minimum sustained write for continuous recording integrity
  • Built to endure 0 °C to 45 °C operating temperatures
  • Twin pack provides two ready-to-use cards for backup or extended shoots

Twin-pack CFexpress 4.0 Type-B cards

This twin pack supplies two SanDisk Extreme PRO CFexpress 4.0 Type-B memory cards, each rated at 256GB. The cards target professional photographers and videographers who need high-speed media for demanding capture workflows.

Suits high-resolution video workflows

The cards suit creators recording 4K, 6K, 8K and 12K footage who require sustained write performance and reliable operation between 0°C and 45°C. Buyers needing larger single-card capacities or different form factors should consider other options.

VPG400 sustained write guarantee

Each card carries a VPG400 rating, guaranteeing a minimum sustained write speed of 400 MB/s for consistent recording without dropped frames. This specification determines whether the media meets your camera’s minimum write-speed requirement.

How it compares

Measured against everything we stock in SD & MicroSD Memory Cards, at today’s prices. Recalculated every night.

Price $527.99
Pricier than about 90% of the 1,947 comparable items (median $46.99).

Specifications

No published specifications for this item yet.

Questions about this item

Does the CFexpress 4.0 Type-B form factor fit my camera’s card slot?

The card follows the CFexpress Type-B standard, so it fits any camera or reader with a Type-B slot.

What is the correct way to insert the card and the step users often miss?

Align the connector edge with the slot, push straight in until it clicks, then format the card in the camera before first use — skipping the in-camera format is the common mistake.

How do I know when the 256 GB card should be replaced?

Replace the card if sustained write speeds drop below the VPG400 guarantee of 400 MB/s, if files become corrupted, or after heavy use in temperatures outside the 0 °C to 45 °C operating range.

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