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Small red microSD card with SanDisk Extreme branding

SanDisk

SanDisk Extreme microSD 64GB SDSQXH9-064G-GZ6MA memory card

SKU CH-A0XN-N66A2 MPN SDSQXH9-064G-GZ6MA

A 64GB microSD card rated A2, U3 and V30 with read speeds up to 170MB/s and write speeds up to 80MB/s for 5.3K and 4K video capture

  • Total capacity64 GB
  • Memory card formatMicroSD
  • Speed classA2 / U3 / V30
  • Max read speedUp to 170 MB/s
  • Write throughputUp to 80 MB/s
  • Product typeMicroSD

Capacity Extreme® 64GB

  • Fast reads up to 170MB/s for quick transfers
  • Write speeds up to 80MB/s capture 5.3K video smoothly
  • A2 U3 V30 ratings ensure responsive app performance
  • 64GB capacity stores hours of high-res footage
  • Built waterproof, shockproof, temperature-proof for extreme conditions

Capacity and purpose

The SanDisk Extreme microSD card provides 64GB of storage for action cameras, drones and Android devices. Its A2, U3 and V30 ratings support 5.3K and 4K UHD video capture as well as high-resolution stills. The card targets creators who need reliable capacity in a compact form factor. It is not suited for users who require larger capacities or higher sustained write speeds for professional cinema workflows.

Thermals and power

Solid-state construction means the card generates negligible heat and operates silently during normal read and write cycles. Power draw is minimal, allowing extended recording sessions on battery-powered devices without noticeable impact. The design has no moving parts, so there are no fan or thermal-throttling concerns in typical use.

Build and connectors

The microSD form factor fits directly into compatible slots on cameras, drones, phones and handheld consoles. SanDisk rates the card as temperature proof, humidity proof, waterproof, shock proof, drop proof, magnet proof and X-ray proof for durability in harsh environments. An included adapter enables use in full-size SD slots when needed.

How it compares

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

Price $24.99
Cheaper than about 71% of the 1,947 comparable items (median $46.99).
Total capacity 64 GB
Typical for this category: the median of 1,132 items is 64 GB.
Price per TB $390.47 per TB
Typical for this category: the median of 901 items is $374.69 per TB.

Specifications

Product
Brand nameSanDisk
Product lineExtreme
Model nameSDSQXH9-064G-GZ6MA
Total capacity64 GB
Product typeMicroSD
Performance
Speed classA2 / U3 / V30
Max read speedUp to 170 MB/s
Write throughputUp to 80 MB/s
Storage
Memory card formatMicroSD
Size & build
Shipping weight0.05 kg
Package size152 × 102 × 6 mm

Other versions of this model

5 more in the same range

Questions about this item

How do I install the SanDisk Extreme microSD 64GB SDSQXH9-064G-GZ6MA and what step is often missed?

Insert the card label-side up into the device's microSD slot until it clicks; the step often missed is formatting the card in the device before first use to ensure the A2, U3 and V30 speed classes are recognised correctly.

What maintenance or replacement will the SanDisk Extreme microSD 64GB SDSQXH9-064G-GZ6MA need later?

No scheduled maintenance is required; the card is temperature proof, waterproof, shock proof, drop proof, magnet proof and X-ray proof, so replacement is only needed if the 64GB capacity is exceeded or the card is physically damaged.

What limit appears first on the SanDisk Extreme microSD 64GB SDSQXH9-064G-GZ6MA during sustained 5.3K or 4K UHD recording?

The 80MB/s maximum write speed is the first bottleneck; continuous high-bitrate capture at V30 (30MB/s sustained) can approach this ceiling, causing the camera to stop recording if the buffer fills.

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