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Small rectangular microSD card with red and black label

SanDisk

SanDisk Extreme 512GB UHS-I U3 microSDXC Memory Card

SKU CH-PJSB-QXJJM

High-capacity microSDXC card delivers 512 GB storage with 245 MB/s read and 170 MB/s write speeds for 4K UHD video

  • 512 GB capacity stores extensive media libraries
  • Read speeds up to 245 MB/s accelerate file transfers
  • Write speeds up to 170 MB/s support continuous 4K recording
  • U3 and V30 ratings guarantee sustained video capture
  • A2 rating loads apps faster on Android devices

Purpose and Audience

The SanDisk Extreme microSDXC card provides 512GB of removable storage for action cameras, drones, Android devices and handheld consoles. It targets creators who capture 5K point-of-view footage, 4K UHD aerial video or high-resolution burst stills and need sustained write performance. The A2 rating also helps enthusiasts run applications directly from the card.

Build Integration

The UHS-I interface fits any microSDXC slot without extra adapters or power considerations. It frees internal storage on phones, laptops and gaming handhelds by offloading large media libraries and apps. The bundled Memory Zone app assists with file organisation and backup across supported devices. Buyers who need more capacity than 1TB or a UHS-II interface must look elsewhere.

Sustained Workload Behaviour

Video Class V30 and U3 ratings guarantee a minimum sequential write speed of 30MB/s, preventing dropped frames during long 4K recording sessions. Maximum write speed reaches 170MB/s on this capacity, while read speeds peak at 245MB/s for rapid ingest. The card maintains these throughput levels across extended shoots rather than only in short bursts.

Highlights

  • 512 GB capacity stores extensive media libraries
  • Read speeds up to 245 MB/s accelerate file transfers
  • Write speeds up to 170 MB/s support continuous 4K recording
  • U3 and V30 ratings guarantee sustained video capture
  • A2 rating loads apps faster on Android devices

Specifications

No published specifications for this item yet.

Questions about this item

Will the 170MB/s write speed sustain 4K UHD recording without dropping frames?

The card is rated U3 and V30, guaranteeing a minimum 30MB/s sustained write speed for 4K UHD capture.

Does the card run hot or draw extra power during long 5K or 4K shoots?

microSD cards are passive components with no active cooling; they generate minimal heat and draw very little power during continuous recording.

What device slot or adapter is required to use this 512GB microSDXC card?

A microSDXC-compatible slot or a UHS-I microSD card reader is needed; older microSDHC-only slots will not recognise the 512GB capacity.

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