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Red rectangular SDXC memory card with SanDisk Extreme branding

SanDisk

SanDisk Extreme SDXC UHS-I 256GB memory card SDSDXV9-256G-GUCIN

SKU CH-02SR-57YHM MPN SDSDXV9-256G-GUCIN

256 GB SDXC card rated U3 and V30 delivers up to 230 MB/s read and 160 MB/s write for 4K UHD capture

  • Card typeSD Card
  • TypeSecure Digital Extended Capacity (SDXC)
  • Capacity256GB
  • Speed Class RatingA2 / U3 / V30
  • Read SpeedUp to 230MB/s
  • Write SpeedUp to 160MB/s

Capacity Extreme® 256GB

Show 2 more configurations
  • Ultra® 256GB
  • Ultra® 512GB

Struck-through versions exist but are not stocked here.

Model Up to 230MB/s

  • Up to 250MB/s
  • Up to 230MB/s
  • Up to 145MB/s
  • Up to 195MB/s
  • Up to 200MB/s
  • Up to 100MB/s

Struck-through versions exist but are not stocked here.

  • Record 4K UHD smoothly with U3 and V30 ratings
  • Transfer files fast at up to 230MB/s read speed
  • Write bursts quickly at up to 160MB/s write speed
  • Store hours of footage with 256GB capacity
  • Built to withstand extreme conditions for reliable use

256GB SDXC card for 4K capture

This SanDisk Extreme SDXC UHS-I card provides 256GB of storage for cameras and devices that accept SDXC media. It targets photographers and videographers who need reliable capacity for high-resolution stills and 4K UHD video recording. The A2 rating also supports faster app loading on compatible devices.

U3 and V30 sustained write performance

The card carries UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings, guaranteeing a minimum sustained write speed of 30MB/s. This specification is the decisive factor for uninterrupted 4K UHD recording at 30 fps. Maximum read speed reaches 230MB/s and maximum write speed reaches 160MB/s.

256GB capacity with 4K UHD headroom

At 256GB the card can hold approximately 719 minutes of 4K UHD video at 30 fps based on a 641MB per minute bitrate. This headroom suits extended shooting sessions without frequent offloads. Users recording at higher bitrates or needing more than 512GB total capacity will need additional or larger cards.

Highlights

  • Record 4K UHD smoothly with U3 and V30 ratings
  • Transfer files fast at up to 230MB/s read speed
  • Write bursts quickly at up to 160MB/s write speed
  • Store hours of footage with 256GB capacity
  • Built to withstand extreme conditions for reliable use

Specifications

BrandSanDisk
Card typeSD Card
SeriesExtreme
ModelSDSDXV9-256G-GUCIN
TypeSecure Digital Extended Capacity (SDXC)
Capacity256GB
Speed Class RatingA2 / U3 / V30
Read SpeedUp to 230MB/s
Write SpeedUp to 160MB/s
Features* CAPTURE LARGER THAN LIFE. Unlock picturesque 4K UHD brilliance and pristine high res stills with video speed class ratings of U3 and V30.
* SPEED BARRIERS SHATTERED. Save precious moments with blazing read speeds up to 230MB/s and write speeds up to 160MB/s [256GB-512GB capacities]
* MAXIMIZE WITH MASSIVE CAPACITY. Capture for longer and store more with up to 512GB of storage that can hold up to 719 minutes of 4K UHD video recorded at 30 fps (641MB/minute).
* DEFY THE ELEMENTS. Unrelentingly resilient, SANDISK® SD memory cards are engineered to perform in extreme conditions, despit
Shipping weight0.05 kg
Package size152 × 102 × 6 mm

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

What does the 230MB/s read speed mean when the card is inside a camera or card reader?

The 230MB/s read speed is the maximum sequential transfer rate achievable with a compatible UHS-I device; sustained throughput will depend on the host hardware and file sizes.

How does the UHS-I interface affect the 160MB/s write speed claim?

UHS-I provides the bus pathway; the 160MB/s write figure represents peak performance on supported UHS-I hosts under optimal conditions.

What physical slot and device support are required for this 256GB SDXC card?

It requires a full-size SDXC-compatible slot that supports UHS-I; devices limited to SDHC will not recognise the 256GB capacity.

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