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Delkin CFexpress™ Type B Memory Cards


- POWER
- Preferred by Professionals
- 128GB – 2TB
- 1730 MB/s Max Read
- 1540 MB/s Max Write
- Lifetime Warranty
- Ideal for professional photographers & videographers, the POWER CFexpress™ card is designed to excel in high-end cinema cameras for flawless 6K & 4K RAW video recording.

- BLACK
- Fastest on the Market
- 75GB – 650GB
- 1725 MB/s Max Read
- 1240 – 1530 MB/s Min Sustained Write
- Lifetime Warranty
- Utilizing the latest speed technology, the BLACK CFexpress™ card is specially designed to be superior in terms of performance and reliability, supporting modes like 8K RAW video recording.
Overview:
CFexpress™ Type B Memory Cards from Delkin Devices combine industrial strength & reliability with unmatched performance, plus a quality guarantee like no other card. With speeds suitable for professional photographers and videographers, Delkin CFexpress™ Type B cards are specifically designed to excel in the latest generation of high-end cinematic hosts. As a bonus, every card is backed by our 48HR Replacement Guarantee policy for the ultimate coverage.
Technologically Advanced CFexpress™ Recording Speeds
Utilizing a 3rd generation PCI Express interface (as well as supporting NVM Express), Delkin POWER CFexpress™ Type B cards boast maximum potential recording speeds up to 1540 MB/s for flawless cinema-quality video capture, including 8K, 6K & 4K at high frame rates and bitrates. They also support RAW continuous-burst shooting without delay – never miss those precious split-second moments!
The Delkin BLACK line distinguishes itself from the rest of the market by offering minimum sustained sequential write speeds exceeding 1240 MB/s, guaranteeing that data is written swiftly and safely to the card. This is especially valuable for videographers and filmmakers who are shooting with high-end cinema cameras that capture RAW video at Gbps rates.

To learn more about PCI Express (PCIe) technology and the advantages it offers over other memory solutions, please check out our “PCI Express (PCIe) Explained” Learning Lab article.
Streamlined Workflow
Capable of offloading data at speeds reaching up to 1725 MB/s, Delkin CFexpress™ Type B cards ensure the quickest, most efficient data transfer from card to computer for immediate access to your files and sooner post-production start time. This is ideal for photographers and videographers who need to quickly unload large amounts of data and get back to shooting.
Tested for Compatibility
Each CFexpress™ Type B card has undergone extensive testing to ensure full functionality and performance in today’s high-end hosts. Built to meet the extensive demands of today’s broadcast, cinema and photography industries, Delkin CFexpress™ memory cards are the cards you can trust for fast, reliable photo & video capture. It is important to note though that CFexpress™ Type B cards are not backwards compatible with either CFexpress™ Type A, CFast 2.0 or CompactFlash hosts.
Durable Design & Lifetime Warranty
Built to endure even the most strenuous shooting environments, Delkin CFexpress™ Type B cards are durably designed to be shockproof, magnet proof, X-ray proof, anti-static, UV-guarded and resistant to extreme temperatures. Each card is also backed by a Lifetime Warranty and Delkin’s American-based customer support team out of San Diego, CA.
World’s Best Warranty – 48HR Replacement Guarantee
Not offered anywhere else in the world, Delkin CFexpress™ Type B memory cards and those with the “48HR logo” come with a superior 48-hour replacement guarantee in addition to our “Lifetime Warranty” policy. We will happily replace any non-working card within 48 hours or less (not including weekends), prior to receiving your non-working card. You can also replace your card over the counter at any authorized Delkin reseller. To activate your Delkin CFexpress™ Type B card’s free replacement program & lifetime warranty, simply register your card online here.
Specifications:
BLACK | ||
CAPACITY | MAX POTENTIAL READ SPEED | MIN SUSTAINED WRITE SPEED |
75GB | 1725 MB/s Maximum | 1240 MB/s Minimum |
150GB | 1725 MB/s Maximum | 1530 MB/s Minimum |
325GB | 1725 MB/s Maximum | 1530 MB/s Minimum |
650GB | 1725 MB/s Maximum | 1530 MB/s Minimum |
POWER | ||
CAPACITY | MAX POTENTIAL READ SPEED | MAX BURST WRITE SPEED |
128GB | 1730 MB/s Maximum | 1540 MB/s Maximum |
256GB | 1730 MB/s Maximum | 1540 MB/s Maximum |
512GB | 1730 MB/s Maximum | 1540 MB/s Maximum |
1TB | 1730 MB/s Maximum | 1540 MB/s Maximum |
2TB | 1730 MB/s Maximum | 1540 MB/s Maximum |
Compatible Cameras:
MANUFACTURER | MODEL | SUPPORTED MEMORY CARDS | PASSED INTERNAL TESTING |
Canon | C300 Mark III | (2) CFexpress Memory Cards; (1) SD UHS-II Memory Card | ✔ (BLACK Recommended) |
C500 Mark II | (2) CFexpress Memory Cards; (1) SD UHS-II Memory Card | ✔ | |
1D X Mark III | (2) CFexpress Memory Cards | ✔ | |
R3 | (1) CFexpress Memory Card; (1) SD UHS-II Memory Card | ✔ | |
R5 | (1) CFexpress Memory Card; (1) SD UHS-II Memory Card | ✔ | |
R5 C | (1) CFexpress Memory Card; (1) SD UHS-II Memory Card | ✔ (BLACK Recommended) |
|
DJI | Ronin 4D | (1) CFexpress Memory Card | ✔ |
Fujifilm | X-H2S – NEW! | (1) CFexpress Memory Card; (1) SD UHS-II Memory Card | ✔ |
Nikon | D5 | (2) CFexpress (or XQD) Memory Cards (Camera Must Have Firmware Version 1.4 or Higher) |
✔ |
D6 | (2) CFexpress (or XQD) Memory Cards | ✔ | |
D500 | (1) CFexpress (or XQD) Memory Card; (1) SD UHS-II Memory Card (Camera Must Have Firmware Version 1.3 or Higher) |
✔ | |
D850 | (1) CFexpress (or XQD) Memory Card; (1) SD UHS-II Memory Card (Camera Must Have Firmware Version 1.2 or Higher) |
✔ | |
Z6 | (1) CFexpress Memory Card (Camera Must Have Firmware Version 2.2 or Higher) |
✔ | |
Z7 | (1) CFexpress Memory Card (Camera Must Have Firmware Version 2.2 or Higher) |
✔ | |
Z6 II | (1) CFexpress (or XQD) Memory Card; (1) SD UHS-II Memory Card | ✔ | |
Z7 II | (1) CFexpress (or XQD) Memory Card; (1) SD UHS-II Memory Card | ✔ | |
Z9 | (2) CFexpress Memory Cards | ✔ (BLACK Recommended) |
|
Panasonic | S1 / S1R | (1) CFexpress Memory Card; (1) SD UHS-II Memory Card (Camera Must Have Firmware Version 1.3 or Higher) |
✔ |
GH6 | (1) CFexpress (or XQD) Memory Card; (1) SD UHS-II Memory Card | ✔ | |
Phase One | XF IQ4 | (1) CFexpress (or XQD) Memory Card; (1) SD UHS-II Memory Card (Camera Must Have Firmware Version 6.00.XX [Feature Update #8] or Higher) |
✔ |
(Last updated 6/3/22)
Quick Guide to Choosing the Right Card:
NEED | BLACK | POWER |
I Want to Shoot 4K & 6K RAW Video at High Frame Rates & Bitrates | ✔ | ✔ |
I Want to Shoot 8K RAW Video at High Frame Rates & Bitrates | ✔ | |
I Want the Fastest MINIMUM SUSTAINED Write Speeds | ✔ | |
I Want to Shoot in All Modes Available on the Nikon Z9 (Firmware v2.0+) | ✔ | |
I Want to Shoot in the Highest Resolution Available on the Canon C300 Mark III | ✔ | |
I Want the Largest Available Capacity Offered | ✔ | |
I Want Delkin’s 48HR Replacement Guarantee | ✔ | ✔ |
I Want Support From Delkin’s U.S. Customer Service Team | ✔ | ✔ |
Reviews:
Camnostic
“It is the fastest of the USB 3.2 Gen 2 readers in most tests, and even the fastest Thunderbolt reader would be only about a quarter faster when reading cards. The Delkin will eat up 15 GB of images in about 18 seconds.”
Click to read the full review
Peta Pixel
“A critical factor – perhaps the most important for sports and wildlife shooters – is the number of shots you can rip before you get the unpredictable stutter of a full cache. In mechanical shutter at 12 FPS, the R5 will give you between 10 and 15 seconds of glorious, uninterrupted shooting…The Delkin consistently took the lead here.”
Click to read the full review
Bedford Camera & Video

Click to watch the full video review
Camera Times
“Designed for on-the-go users who need something that is not only compact but can handle the high-performance demands of cards used in broadcast, cinema, and photography industries, the Delkin Devices USB 3.2 Gen 2 CFexpress Memory Card Reader features a 10 Gb/s USB 3.2 Gen 2 Type-C interface and can offload large files, including high-res raw images and 8K, 4K, Full HD, and 3D video.”
Click to read the full review
The SSD Review
“The Delkin Devices Prime 64GB and Power 128GB CFexpress Type B cards are two of the most impressive cards we have seen to date. Not only did they display performance well in excess of 1.5GB/s in our synthetic testing, but also, both pulled off sustained writes in excess of 1GB/s as well…and all the while maintaining what only could be described as normal card temperatures.”
Click to read the full review
Data Recovery Support:
Delkin Devices is proud to partner with LC Technology, creators of data recovery software PHOTORECOVERY®, FILERECOVERY® and FILERECOVERY® Professional, to support our premium memory card lines. Lines covered include POWER SD, PRIME & POWER microSD, XQD, CFast 2.0, PRIME & POWER CFexpress™, JUGGLER™ SSD and BLACK. For more information and support regarding LC Technology, please contact Delkin Customer Service at customerservice@delkin.com.
Part Numbers for Reference
BLACK CFexpress | DCFXBLK64 | DCFXBLK128 | DCFXBLK256 | DCFXBLK512 | |
---|---|---|---|---|---|
BLACK CFexpress – NEW! | DCFXBBLK75 | DCFXBBLK150 | DCFXBBLK325 | DCFXBBLK650 | |
POWER CFexpress | DCFX1-128 | DCFX1-256 | DCFX1-512 | DCFX1-1TB | DCFX1-2TB |
Memory Card Reader | DDREADER-54 | DDREADER-56 |