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Two black rectangular CFexpress Type-B memory cards side by side

SanDisk

SanDisk Extreme PRO 4TB CFexpress 4.0 Type-B 2pk memory card

SKU CH-J8ZQ-302GB

Two 4 TB CFexpress 4.0 Type-B cards deliver up to 3700 MB/s read and 3500 MB/s write with VPG1600 sustained performance

  • Up to 3700 MB/s read speed accelerates file access
  • Up to 3500 MB/s write speed enables 12K video capture
  • 4TB capacity stores extensive high-resolution projects
  • Minimum sustained write of 3100 MB/s prevents dropped frames
  • VPG1600 rating guarantees consistent performance for professional workflows

Professional high-capacity CFexpress storage

The SanDisk Extreme PRO CFexpress 4.0 Type-B card delivers up to 3700 MB/s read and 3500 MB/s write speeds with a 4TB capacity. Minimum sustained write performance of 3100 MB/s supports extended recording sessions. VPG1600 certification guarantees consistent throughput for demanding video workflows. The PCIe Gen4 interface enables capture at 4K, 6K, 8K and 12K resolutions.

Suited for cinema and high-resolution stills

Videographers recording long takes at high bitrates and photographers shooting continuous bursts will benefit from the sustained write guarantee and large capacity. SmartIdle technology helps manage thermal load during prolonged use. The card operates reliably from 0°C to 45°C. Buyers who need lower capacities or different form factors should consider alternative options.

Two-card pack doubles available media

The 2pk configuration provides a combined 8TB of high-speed storage across two independent cards. This allows immediate backup rotation or parallel recording without swapping media. No additional software or accessories are included in the package. Each card functions as a standalone CFexpress 4.0 Type-B device.

Highlights

  • Up to 3700 MB/s read speed accelerates file access
  • Up to 3500 MB/s write speed enables 12K video capture
  • 4TB capacity stores extensive high-resolution projects
  • Minimum sustained write of 3100 MB/s prevents dropped frames
  • VPG1600 rating guarantees consistent performance for professional workflows

Specifications

No published specifications for this item yet.

Questions about this item

Which camera or reader must I already own to use the CFexpress 4.0 Type-B form factor and PCIe Gen4 interface?

You need a device with a CFexpress Type-B slot that supports the CFexpress 4.0 specification and PCIe Gen4 signalling; the card will not operate at its rated speeds in a Type-A slot or a legacy CFexpress 2.0 host.

How will the card behave if I keep using an older CFexpress 2.0 reader?

In a CFexpress 2.0 reader the card falls back to the reader's maximum throughput, so you lose the 3700 MB/s read and 3500 MB/s write ceiling and the VPG1600 sustained-write guarantee.

How can I verify the VPG1600 sustained write speed is active after setup?

Run a sustained-write benchmark or record a long 8K/12K clip; the card should maintain at least 3100 MB/s write throughput without dropped frames, confirming VPG1600 operation.

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