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SanDisk MicroSD Express 512GB card in standard microSD form factor with matte finish

SanDisk

SanDisk MicroSD Express 880MB/s 512GB memory card

SKU CH-BWGZ-YTAK7

MicroSD Express card with PCIe NVMe interface delivering 880 MB/s read and 480 MB/s write speeds for 512 GB capacity

  • 880 MB/s sequential read speed accelerates file transfers
  • 480 MB/s sequential write on 128 GB model supports sustained recording
  • PCIe NVMe interface enables performance comparable to portable SSDs
  • ThermAdapt enclosure and adaptive thermal controller help prevent device overheating
  • Works with existing microSD UHS-I and UHS-II devices for broad compatibility

Next-gen microSD Express card

SanDisk MicroSD Express delivers 880MB/s sequential read and 650MB/s sequential write speeds in a 512GB capacity. It uses a PCIe NVMe interface alongside UHS-I compatibility for next-level performance. The card targets creators and gamers who refuse to settle for standard microSD speeds. SanDisk ThermAdapt technology helps prevent device overheating during sustained workloads.

PCIe NVMe interface limits

The card requires a PCIe NVMe compatible host to reach its advertised 880MB/s read speed. In standard UHS-I devices it falls back to UHS-I performance levels, far below the Express peak. A SanDisk PRO-READER SD Express Dual Card reader is needed to achieve the 3.5-second 2-hour HD movie transfer claim. Without Express host support the card behaves like a conventional UHS-I card.

512GB capacity with 650MB/s write

This specific 512GB model provides 650MB/s sequential write speed, distinct from the 480MB/s of the 128GB version. Buyers needing sustained high write throughput for 5.3K video or burst RAW capture should verify this figure meets their workflow. Users who need more storage or higher write speeds than 650MB/s must look beyond this single capacity option.

Highlights

  • 880 MB/s sequential read speed accelerates file transfers
  • 480 MB/s sequential write on 128 GB model supports sustained recording
  • PCIe NVMe interface enables performance comparable to portable SSDs
  • ThermAdapt enclosure and adaptive thermal controller help prevent device overheating
  • Works with existing microSD UHS-I and UHS-II devices for broad compatibility

Specifications

No published specifications for this item yet.

Questions about this item

Should I pick the 128GB, 256GB or 512GB version?

The 128GB card writes at 480MB/s, the 256GB at 650MB/s and this 512GB model reads at 880MB/s. Choose the capacity that matches the write speed your workflow needs.

What does 880MB/s read speed actually deliver in my device?

A 2-hour HD movie can be transferred in under 3.5 seconds when paired with a compatible PCIe NVMe reader. Real-world throughput depends on your host hardware and thermal limits.

Does the PCIe NVMe interface cap performance on older UHS-I slots?

Yes. In UHS-I devices the card falls back to UHS-I speeds, so the 880MB/s headline figure is only reachable with a PCIe NVMe host such as the SanDisk PRO-READER SD Express Dual Card.

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