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Red SanDisk Extreme Pro SDXC card, 256GB capacity

SanDisk

SanDisk Extreme Pro SDXC 256GB UHS-I U3 V30 C10 170MB/s 90MB/s memory card

SKU CH-1009-2J1V0

A 256 GB SDXC card rated U3, V30 and Class 10 for 4K UHD video and burst photography, with up to 170 MB/s read and 90 MB/s write speeds

  • Total capacity256 GB
  • Speed classC10, U3, V30
  • Max read speedUp to 170 MB/s
  • Write throughputUp to 90 MB/s
  • Product typeSecure Digital Extended Capacity (SDXC)
  • Key featuresPerfect for shooting 4K UHD video and sequential burst mode
  • Fast 4K UHD video capture with U3 and V30 speed classes
  • Quick file transfers at up to 170MB/s read speed
  • Sustained burst shooting backed by 90MB/s write speed
  • Data protected by temperature-proof, waterproof, shockproof and x-ray-proof build
  • Ample 256GB capacity for extended shooting sessions

SanDisk Extreme Pro SDXC 256GB

The SanDisk Extreme Pro SDXC card delivers 256GB of storage for cameras and camcorders that use the SDXC format. It carries UHS Speed Class 3 (U3), Video Speed Class 30 (V30) and Class 10 ratings, making it suitable for 4K UHD video and sequential burst photography. Read speeds reach up to 170MB/s and write speeds up to 90MB/s.

UHS-I interface limits

The card operates on the UHS-I bus, so sustained throughput cannot exceed the bus maximum even though the card is rated for 170MB/s read and 90MB/s write. Devices without UHS-I support will fall back to lower speeds, and host controllers that do not sustain U3 or V30 minimums may drop frames during 4K recording. Transfer times to a computer also depend on the reader's own UHS-I implementation.

Upgrade from slower SD cards

Replacing a Class 10 or U1 card removes the bottleneck that causes buffer pauses during burst shooting or dropped frames in 4K UHD video. The jump is worth it when your camera requires U3 or V30 sustained write performance, or when you need faster offload speeds from the 170MB/s read rating. Cards below 64GB capacity or without U3/V30 markings will not meet the same recording guarantees.

How it compares

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

Price $79.99
Pricier than about 66% of the 1,947 comparable items (median $46.99).
Total capacity 256 GB
Higher than about 80% of the 1,132 comparable items (median 64 GB).
Price per TB $312.46 per TB
Cheaper than about 58% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameSanDisk
Product lineExtreme Pro
Model nameSDSDXXY-256G-GN4IN
Total capacity256 GB
Product typeSecure Digital Extended Capacity (SDXC)
Performance
Speed classC10, U3, V30
Max read speedUp to 170 MB/s
Write throughputUp to 90 MB/s

Questions about this item

Which capacity should I choose among 64GB, 128GB and 256GB?

The 256GB version stores more 4K UHD footage and high-resolution bursts before you need to offload, while 64GB and 128GB cost less and suit shorter sessions.

What does the 170MB/s read speed mean when I copy files to my computer?

It is the maximum transfer rate the card can sustain when paired with a compatible UHS-I reader, so large 4K video folders move to your drive in less time.

What does the UHS-I interface limit in practice?

UHS-I sets the bus protocol the card uses; the 170MB/s read and 90MB/s write ratings are achieved within that interface when the host device supports the same speeds.

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