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SanDisk Extreme 256 GB microSDXC card red and gold label

SanDisk

SanDisk Extreme 256 GB SDSQXAV256GAN6M memory card

SKU CH-PB6X-GKEZW MPN SDSQXAV256GAN6M

A 256 GB microSDXC card rated for 4K UHD video with 190 MB/s read and 130 MB/s write speeds

  • Capacity130 MB
  • Read Speed190 Megabytes Per Second
  • Fast transfers with up to 190 MB/s read speed
  • Quick saves with up to 130 MB/s write speed
  • Smooth 4K UHD and Full HD video recording
  • UHS Speed Class 3 and Video Speed Class 30 for sustained capture
  • A2 rating speeds up app loading on devices

SanDisk Extreme 256 GB microSDXC

The SanDisk Extreme 256 GB microSDXC card targets photographers and videographers who need reliable storage for high-resolution capture. It carries UHS Speed Class 3 and Video Speed Class 30 ratings for sustained 4K UHD and Full HD recording. The A2 application performance class speeds up app loading on compatible devices.

256 GB capacity with 190 MB/s read

The 256 GB capacity holds hours of 4K footage or thousands of RAW images. Sequential read reaches 190 MB/s for fast offloads while write sustains 130 MB/s to keep up with high-bitrate video. Very high frame-rate or proxy workflows may exceed the write ceiling.

Thermals noise and power draw

As a solid-state memory card it has no moving parts and produces no audible noise. Power draw is minimal and scales with transfer activity. The card operates within standard industrial temperature ranges for reliable field use.

Highlights

  • Fast transfers with up to 190 MB/s read speed
  • Quick saves with up to 130 MB/s write speed
  • Smooth 4K UHD and Full HD video recording
  • UHS Speed Class 3 and Video Speed Class 30 for sustained capture
  • A2 rating speeds up app loading on devices

Specifications

BrandSanDisk
Capacity130 MB
Read Speed190 Megabytes Per Second
Shipping weight0.05 kg
Package size203 × 102 × 3 mm

Questions about this item

Will this 256 GB SanDisk Extreme card work reliably in my older camera that only supports UHS-I?

The card uses the UHS-I interface and carries the U3 and V30 ratings, so it will function in UHS-I devices at the speeds that the host allows.

How can I verify the card is delivering the advertised 190 MB/s read and 130 MB/s write speeds after I format it?

Run a benchmark tool such as CrystalDiskMark or Blackmagic Disk Speed Test on a UHS-I reader; sequential results near 190 MB/s read and 130 MB/s write confirm expected performance.

Does the package include a card reader or adapter, or do I need to buy one separately?

The box contains only the 256 GB microSDXC card; a compatible UHS-I reader or microSD-to-SD adapter must be purchased separately if your device lacks a built-in slot.

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