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SanDisk Extreme Pro 256GB SDXC memory card, black label with red accent

SanDisk

SanDisk Extreme Pro SDXC 256GB UHS-I U3 V30 Class 10 200MB/s SDSDXXD-256G-GN4IN memory card

SKU CH-Q9XT-BVWFK MPN SDSDXXD-256G-GN4IN

A 256 GB SDXC card with 200 MB/s read and 140 MB/s write speeds for fast 4K capture and quick transfers

  • TypeSecure Digital Extended Capacity (SDXC)
  • Capacity256GB
  • Speed Class RatingUHS-I / U3 / Class 10 / V30

Capacity 256GB

Struck-through versions exist but are not stocked here.

  • Capture 4K UHD video smoothly with U3 V30 Class 10 rating
  • Fast post-production workflow via 200MB/s read speed
  • Continuous burst shooting supported by 140MB/s write speed
  • Store extensive media libraries on 256GB capacity
  • QuickFlow Technology optimises offloads for time-saving transfers

256GB SDXC card for 4K video

This 256GB SanDisk Extreme Pro SDXC card uses the UHS-I interface with U3, Class 10 and V30 ratings. It targets photographers and videographers who need reliable capacity for high-resolution images and 4K UHD footage. The card is built to withstand harsh weather, water and shocks for demanding shooting environments.

Sustained write performance for long clips

Shot speeds reach up to 140MB/s, supporting stutter-free 4K UHD video recording over extended sessions. The V30 rating guarantees a minimum sustained write speed of 30MB/s, preventing dropped frames during continuous capture. Offloading media is accelerated by SanDisk QuickFlow technology when paired with a compatible reader.

Check device compatibility and reader speed

Verify that your camera or recorder supports SDXC cards and the UHS-I bus to use the full capacity and speed classes. Maximum transfer rates of 200MB/s require the SanDisk Professional PRO-READER SD and microSD, sold separately. Older hosts limited to SDHC or lower speed classes will not achieve the rated performance.

Highlights

  • Capture 4K UHD video smoothly with U3 V30 Class 10 rating
  • Fast post-production workflow via 200MB/s read speed
  • Continuous burst shooting supported by 140MB/s write speed
  • Store extensive media libraries on 256GB capacity
  • QuickFlow Technology optimises offloads for time-saving transfers

Specifications

BrandSanDisk
SeriesExtreme Pro
ModelSDSDXXD-256G-GN4IN
TypeSecure Digital Extended Capacity (SDXC)
Capacity256GB
Speed Class RatingUHS-I / U3 / Class 10 / V30
Shipping weight0.02 kg
Package size177 × 101 × 14 mm

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Questions about this item

How much heat or noise does the 256GB Extreme Pro SDXC card generate during continuous all-day recording?

The card has no moving parts and produces no audible noise; heat output is negligible during sustained 140MB/s writes or 200MB/s transfers.

What host device and card reader do I already need to reach the quoted 200MB/s transfer rate?

A UHS-I compatible camera or recorder for capture, plus a UHS-I SD reader such as the SanDisk Professional PRO-READER to achieve 200MB/s offload speeds.

Will this UHS-I V30 card work reliably in my older camera that only supports Class 10 speeds?

Yes, the card is backward compatible with Class 10 hosts; it will operate at the host's maximum supported speed while retaining full 256GB capacity.

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