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Small rectangular SDXC memory card with black and red label, gold contacts visible

SanDisk

SanDisk Extreme 64GB SDXC UHS-I U3 memory card

SKU CH-N0KS-8NK4A

64 GB SDXC card rated UHS-I U3 with 150 MB/s read and 60 MB/s write speeds for burst shooting and 4K video

  • Fast continuous shooting with minimum 30 MB/s write speed
  • Quick file transfers via up to 150 MB/s read speed
  • Ample 64 GB capacity for high-resolution photos and videos
  • Reliable UHS-I U3 Class 10 performance for advanced cameras
  • Durable SDXC form factor built for demanding shooting conditions

64 GB SDXC UHS-I U3 card

The SanDisk Extreme 64 GB SDXC UHS-I U3 memory card is built for photographers and videographers who need reliable storage for high-resolution images and Full HD or 4K video. It delivers read speeds up to 150 MB/s and write speeds up to 60 MB/s with a minimum sustained write of 30 MB/s. The UHS Speed Class 3 rating guarantees performance for continuous burst shooting and smooth video recording. This card suits advanced cameras and HD camcorders that support the SDXC format.

Who this suits and who should look elsewhere

This card suits photographers capturing fast action, continuous bursts or 4K video on SDXC-compatible cameras and camcorders. It is not for devices limited to SDHC capacity or older hosts that cannot use UHS-I speeds. Buyers needing more than 64 GB of capacity should consider a larger card. Users requiring faster sustained write speeds for professional cinema workflows should evaluate higher-tier options.

Minimum sustained write speed of 30 MB/s

The single specification that decides suitability is the minimum sustained write speed of 30 MB/s, marked by the U3 rating. This ensures the card can handle 4K video recording and rapid burst photography without dropping frames. If your camera demands a higher minimum write speed, this card will not meet that requirement. For standard 4K and high-speed burst needs, the 30 MB/s floor is the decisive figure.

Highlights

  • Fast continuous shooting with minimum 30 MB/s write speed
  • Quick file transfers via up to 150 MB/s read speed
  • Ample 64 GB capacity for high-resolution photos and videos
  • Reliable UHS-I U3 Class 10 performance for advanced cameras
  • Durable SDXC form factor built for demanding shooting conditions

Specifications

No published specifications for this item yet.

Questions about this item

How much power does the 64GB Extreme SDXC UHS-I U3 card draw during all-day 150 MB/s read operations?

The card operates entirely from the host device's SD slot and has no separate power draw specification; continuous read or write activity is sustained by the camera or reader's own supply.

What device interface must I already own to use this UHS-I U3 SDXC card at its rated 150 MB/s read and 60 MB/s write speeds?

A UHS-I SDXC slot — found on most recent DSLRs, mirrorless cameras and SD card readers — is required; older UHS-I or standard SDHC hosts will work but at lower speeds.

Will this 64GB Extreme card work reliably in a ten-year-old camera that only supports Class 10 SDHC cards?

The card is backward compatible with Class 10 hosts, so it will function, but capacity is limited to the camera's maximum supported size and speeds fall to the host's limit.

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