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Small red microSDXC card with black label and full-size SD adapter

SanDisk

SanDisk Extreme 64GB microSDXC U3 V30 A2 170MB/s memory card

SKU CH-754G-XCWSA

A 64 GB microSDXC card with 170 MB/s read and 130 MB/s write speeds for 4K UHD video, rated U3, V30 and A2

  • Capacity64GB

Capacity 64GB

  • 64GB
  • 128GB
  • 256GB
  • 512GB
  • 1TB
  • 2TB

Struck-through versions exist but are not stocked here.

  • Transfer large files faster with 170 MB/s read speed
  • Record 4K UHD video smoothly with U3 V30 rating
  • Run apps quicker using A2 app performance class
  • Protect data in harsh conditions with shock water temperature X-ray proof
  • Move media efficiently via SanDisk QuickFlow Technology

Purpose and Audience

The SanDisk Extreme 64GB microSDXC card targets photographers and videographers who need reliable 4K UHD capture. Its A2 rating also suits users running apps directly from the card on Android devices. Buyers needing sustained write throughput above 130MB/s or capacities beyond 64GB should consider other options.

Interface Limits

The card uses the UHS-I bus, capping maximum read performance at 170MB/s even with a compatible reader. Write speeds reach up to 130MB/s, while the V30 and U3 ratings guarantee a minimum of 30MB/s for continuous video recording. Pairing with the SanDisk Professional PRO-READER SD and microSD can enable speeds up to 190MB/s, though that reader is sold separately.

Build and Daily Use

The card is shock-, temperature-, water- and X-ray-proof, protecting data in harsh environments. An SD adapter is included for use in full-size slots. SanDisk Memory Zone software helps manage files on mobile devices. Real-world transfer rates depend heavily on the quality of the card reader and USB 3.0 port used.

Highlights

  • Transfer large files faster with 170 MB/s read speed
  • Record 4K UHD video smoothly with U3 V30 rating
  • Run apps quicker using A2 app performance class
  • Protect data in harsh conditions with shock water temperature X-ray proof
  • Move media efficiently via SanDisk QuickFlow Technology

Specifications

Capacity64GB

Other versions of this model

1 more in the same range

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

Questions about this item

Should I pick the 32GB or 64GB version for app-heavy use?

The 64GB card carries A2 app performance while the 32GB is rated A1, so the larger capacity gives faster app loading.

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

That is the maximum sequential read speed; real-world transfers will be lower unless you use a UHS-I reader that can sustain the rate.

Does the UHS-I U3 V30 rating limit video recording or burst shooting?

U3 and V30 both guarantee a minimum 30MB/s sustained write, enough for 4K UHD, while the card can burst to 130MB/s write for fast shooting.

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