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
CompactFlash memory card, black label, 128GB capacity, 600MB/s read speed

Digital Speed

Digital Speed 4000X 128GB 600MB/s Mach III CF memory card

SKU CH-JZ38-8ABV6

Professional CF card holds 128 GB, delivers 600 MB/s read speed and Class 10 performance for 1080p, 3D and 4K capture

  • 128 GB capacity stores extended 4K and 1080p footage
  • 600 MB/s read speed accelerates file transfer to computer
  • UHS-II U3 rating sustains high-quality 3D and 4K video capture
  • Class 10 specification guarantees minimum write performance for Full HD
  • Downloadable Image Rescue software recovers lost photos and select video files

Professional CF Card for High-Resolution Capture

The Digital Speed 4000X is a 128GB CompactFlash memory card built for photographers and videographers who record Full HD, 3D, and 4K content. It meets the UHS Speed Class II specification and carries a Class 10 rating, ensuring the sustained write performance required by professional DSLR, HD camcorder, and 3D camera workflows.

UHS-II Interface Accelerates Workflow

The card leverages UHS-II technology to deliver a maximum read speed of 600MB/s, dramatically reducing file transfer times from card to computer. Backwards compatibility with UHS-II devices allows it to function in existing compatible slots, while the included downloadable Image Rescue software provides a safety net for recovering most photos and select video files.

Sustained 600MB/s Read for Continuous Offload

Under sustained load, the card maintains its 600MB/s (4000x) read capability, preventing bottlenecks during large batch offloads of 1080p and 4K footage. This consistent throughput keeps post-production pipelines moving without the slowdowns common with lower-class media during extended transfer sessions.

Highlights

  • 128 GB capacity stores extended 4K and 1080p footage
  • 600 MB/s read speed accelerates file transfer to computer
  • UHS-II U3 rating sustains high-quality 3D and 4K video capture
  • Class 10 specification guarantees minimum write performance for Full HD
  • Downloadable Image Rescue software recovers lost photos and select video files

Specifications

BrandDigital Speed

Questions about this item

What is the maximum read speed the 4000X card can sustain when recording 4K video?

The card delivers a maximum read speed of 600 MB/s, rated at 4000x, which supports continuous 4K capture.

How much heat or noise does the CF card produce during all-day shooting?

Solid-state CF cards have no moving parts, so they generate no audible noise and only minimal heat during extended use.

Which camera slot or reader do I need to use this CompactFlash card?

You need a device with a CompactFlash slot that supports UHS-II (U3) to reach the 600 MB/s read speed.

Also in this aisle

People compared these

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