We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Red microSDXC card with SD adapter on white background

SanDisk

SanDisk Extreme 64 GB microSDXC 170/80 MB/s U3 V30 A2

SKU CH-Z0CX-BW7SZ

64 GB microSDXC card with 170 MB/s read and 80 MB/s write speeds for 4K UHD video and A2 app performance

  • Read speeds up to 170 MB/s for fast offloads
  • Write speeds up to 80 MB/s for 4K UHD video
  • A2 rating gives faster app performance on smartphones
  • U3 V30 Class 10 supports sustained video capture
  • Includes SD adapter for wider device compatibility

Capacity & Purpose

The SanDisk Extreme 64 GB microSDXC card delivers UHS-I U3 and V30 performance for 4K UHD video and high-resolution photos. Its A2 rating speeds up application loading on Android smartphones, action cameras and drones. An SD adapter is included for broader device compatibility.

Thermals, Noise & Power

As a solid-state memory card it has no moving parts, so it runs silently and generates negligible heat during normal read or write operations. Power draw is minimal and supplied entirely by the host device without requiring an external source.

Speed Class Decides Fit

The card guarantees a minimum sustained write speed of 30 MB/s (V30) and maximum read and write rates of 170 MB/s and 80 MB/s respectively. Buyers who need higher sustained write throughput or larger capacities should consider other options.

Highlights

  • Read speeds up to 170 MB/s for fast offloads
  • Write speeds up to 80 MB/s for 4K UHD video
  • A2 rating gives faster app performance on smartphones
  • U3 V30 Class 10 supports sustained video capture
  • Includes SD adapter for wider device compatibility

Specifications

BrandSanDisk

Questions about this item

How do I install the microSDXC card and SD adapter, and what step do people often get wrong?

Insert the microSDXC card into the SD adapter with the label facing up and the gold contacts entering the slot first, then push the adapter fully into the device's SD slot until it clicks; the common mistake is inserting the microSD card upside down or not seating the adapter completely.

What maintenance or replacement will this card need later?

The card has no moving parts and requires no scheduled maintenance; replace it only if you experience data errors, capacity loss, or physical damage after heavy 4K UHD video recording use.

What limit appears first during sustained 4K UHD video recording?

The 80 MB/s maximum write speed is the first bottleneck during continuous 4K UHD capture, capping the sustained data rate before the 64 GB capacity fills.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.