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Gold rectangular CFexpress Type-A card with label, 640GB capacity

Lexar

Lexar LCAGOLD640G-RNENG 640GB CFexpress 4.0 Type-A memory card

SKU CH-HRGM-HQ6TX MPN LCAGOLD640G-RNENG

CFexpress 4.0 Type-A card holding 640GB with 1800MB/s read, 1650MB/s write and 1400MB/s sustained write for 8K RAW video

  • VPG400 certification guarantees 400MB/s minimum sustained write for 8K RAW capture
  • Read speeds up to 1800MB/s and write speeds up to 1650MB/s accelerate post-production workflows
  • Sustained write of 1400MB/s maintains performance during long bursts and high-bitrate video
  • CFexpress 4.0 with PCIe 4.0 and NVMe doubles bandwidth over CFexpress 2.0
  • IP68 dust and water proof construction protects data in harsh shooting environments

Professional 640GB CFexpress 4.0 Type-A Card

The Lexar Gold Series Professional 640GB CFexpress 4.0 Type-A memory card is built for professional photographers and videographers. It uses PCIe 4.0 and NVMe protocols to deliver read speeds up to 1800MB/s and write speeds up to 1650MB/s. The card is VPG400 certified and rated IP68 for dust and water resistance. It is engineered for high-endurance capture workflows.

CFexpress 4.0 Type-A Interface Limits

This card requires a camera or reader with a CFexpress 4.0 Type-A slot to reach its rated performance. It is not compatible with CFexpress Type-B or CFast slots. Performance will drop to the host device's maximum capability if the slot only supports an older standard such as CFexpress 2.0. Buyers needing a different form factor or interface cannot use this card.

1400MB/s Sustained Write Speed

The 1400MB/s sustained write speed is the key specification for uninterrupted 8K RAW video recording. It ensures the card maintains throughput during long takes without dropping frames. If your workflow does not demand sustained write performance at this level, a lower-specification card may be sufficient.

Highlights

  • VPG400 certification guarantees 400MB/s minimum sustained write for 8K RAW capture
  • Read speeds up to 1800MB/s and write speeds up to 1650MB/s accelerate post-production workflows
  • Sustained write of 1400MB/s maintains performance during long bursts and high-bitrate video
  • CFexpress 4.0 with PCIe 4.0 and NVMe doubles bandwidth over CFexpress 2.0
  • IP68 dust and water proof construction protects data in harsh shooting environments

Specifications

No published specifications for this item yet.

Questions about this item

Which capacity should I choose for 8K RAW video work?

The 640 GB model provides the space and sustained write speed needed for extended 8K RAW recording sessions.

What does the 1800 MB/s read figure mean when I offload footage to my workstation?

It is the peak sequential read speed over PCIe 4.0 and NVMe; real-world offload will be lower and depends on your reader and host controller.

How does the CFexpress 4.0 Type-A interface limit performance in practice?

The Type-A form factor caps the card to two PCIe 4.0 lanes, so maximum throughput is bounded by that lane count and the host device's implementation.

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