Name: 256GB OWC Atlas Pro CFexpress 4.0 Type B Memory Card
Brand: OWC
SKU: OWCCFXB4P00256
Price: 169.99 USD
Availability: InStock

OWC Atlas Pro CFexpress

Cost-effective, highest quality memory card for the most demanding needs of professional photographers and the most common use cases of professional filmmakers

Awesome Professional Performance Made Affordable

When you want a CFexpress Type B memory card that checks all the boxes for all the most common professional workflow needs, Atlas Pro CFexpress is your cost-effective choice. You’ll enjoy awesome performance for the most demanding photo projects including action sports and wildlife photos. Capture up to 6K high bitrate video. Whether you’re a photographer using a firmware updated XQD camera and only need modest storage or are a filmmaker using the latest camera, there’s an Atlas Pro CFexpress card in the optimal capacity for your specific need.

Compatibility You Can Count On

recommended

compatible

compatible, but not at highest resolution settings


	Atlas Pro	Atlas Pro	Atlas Pro	Atlas Ultra	Atlas Ultra
Capacity	256GB	512GB	256GB - 512GB	325GB - 650GB	1.0TB - 2.0TB
Generation	CFexpress 2.0	CFexpress 2.0	CFexpress 4.0	CFexpress 2.0	CFexpress 4.0
Max sequential read	1700MB/s	1850MB/s	3650MB/s	1700MB/s	3650MB/s
Max sequential write	1400MB/s	1700MB/s	3000MB/s	1500MB/s	3000MB/s
Min sustained write	300MB/s	800MB/s	800MB/s	1300MB/s	1500MB/s

Blackmagic Cinema 6K

Canon C300 Mark III
Canon C500 Mark II
Canon 1DX Mark III
Canon EOS R3
Canon EOS R5
Canon EOS R5C

Fujifilm X-H2 / X-H2S
Fujifilm GFX100 II

Nikon Z9
Nikon Z8
Nikon Z6 / Z7
Nikon Z6 II / Z7 II
Nikon D500
Nikon D850
Nikon D5
Nikon D6

Panasonic GH6
Panasonic S1 / S1R

PhaseOne XF IQ4

RED V-Raptor
RED V-Raptor XL
RED Komodo-X

Sony Burano

Quality In = Quality Output

Thanks to an extremely thorough quality control process, you can work fearlessly knowing that your Atlas Pro CFexpress card will flawlessly deliver the speed and data integrity you need when you only have one chance to capture the moment. Quality in, quality output. The Atlas Pro CFexpress is the difference-maker for your high-end workflows and maximum camera setting uses.

Pro speed

Up to 3000MB/s write and up to 3650MB/s read real-world speeds for the most advanced uses cases including fast burst RAW image sequences and high bitrate video recording up to 6K¹

Compatible

Fully compatible with a wide variety of DSLR and mirrorless cameras

Compliant

Fully compliant up to CFexpress Type B 4.0 specification and meets Type B 1.0 and 2.0 specifications

Effective

Use with XQD format cameras that have been updated to support CFexpress Type B

Tough

Impact, bend, shock, ESD, UV ray, and x-ray resistant

Shoot, Store, and Swap… Anywhere

Atlas Pro CFexpress cards can shrug off the toughest environmental challenges, including x-rays, UV rays, shocks, drops, and extreme temperatures. Go ahead…shoot, store, and swap with total peace of mind. Atlas Pro CFexpress cards have your work – and your back – well protected.

Hand holding OWC Atlas Pro CFexpress Memory Card with Volcano in background

Who is it for?

Action sport and wildlife photographers
Professional video cameras up to 6K resolution
Individual content creators/small production companies
Old Nikon DSLR based on XQD media cards that now support CFexpress cards

What is it for?

Capturing the winning play of the game in clear detail
Creating a freeze-frame sequence of a cheetah running down prey
Branded, huge following influencers needing to create enhanced, professional-looking content for their channels
Product photo shoots

Truth in Numbers

Up to 3000MB/s Write Speed

Up to 3650MB/s Read Speed

Up to 800MB/s Sustained Write Speed

Big theoretical performance numbers are certainly eye-catchers, but they are misleading when your workflow requires real-world speed. That’s why we take the extra time to run OWC flash storage solutions through intensive performance testing, and we share our test setup and parameters. Truthfully listing Atlas Pro CFexpress cards for reliable peak performance up to 3000MB/s write, 3650MB/s read, and up to 800MB/s sustained write speed defines our commitment to the “OWC Difference,” which ensures these CFexpress Type B cards will deliver the performance you are counting on.

Maximum Sequential and Sustained Read/Write Performances Delivered by OWC Atlas Pro CFexpress 4.0 Cards

Details matter when it comes to making an investment into a memory card for your camera. That is why OWC Atlas Pro CFexpress 4.0 cards leverage the CFA 4.0 specification that is backward compatible with CFA 2.0 (i.e. PCIe Gen3) cameras and readers of today; and forward compatible with CFA 4.0 (i.e. PCIe Gen4) cameras and readers of the future delivering the highest performance that you deserve.

OWC Atlas Pro CFexpress Memory Card + OWC Atlas FXR Reader - Speed test screenshots

Over 3700MB/s and 3000MB/s sequential read and write and 3300MB/s and 800MB/s sustained read and write performance from a 256GB Atlas Pro CFexpress 4.0 card measured on a Windows 11 computer with AMD Ryzen 9 processor mounted on a Gigabyte Technology x570 Aorus Master motherboard with 32GB of RAM.

OWC Innergize - Photographer on mountaintop

Innergize Your Workflow with Highest Performance and Reliability

OWC Innergize™ is the first stage of the Capture to Completion™ ecosystem of OWC products designed to seamlessly propel professional photographers, videographers, and content creators to the highest level of workflow performance and reliability. This OWC custom-designed app is a complete health, performance, and field upgrade management tool when using OWC Atlas memory cards with OWC Atlas readers and reader equipped products.

Learn More »

Work with Maximum Confidence and Reliability

Health

Over time and use cycles, flash memory does wear out. Innergize verifies and reports the percentage of use life remaining. Now you can work with full confidence your OWC flash memory product will deliver the reliability you can trust.

Sanitize

Writes, deletes, and formatting all take their toll on memory cards. Innergize cleans and restores the flash memory performance of OWC memory cards so you can get the best results on every use.

Field Upgrade

When new cameras or firmware updates to existing cameras are introduced, they may not work properly with flash memory cards and drives. Innergize gives OWC memory card users the ability to quickly upgrade their firmware in the field for full compatibility, additional performance enhancements, and bug fixes for optimal reliability.

Up to 3000MB/s write / up to 3650MB/s read peak performance was observed based on testing OWC Atlas Pro CFexpress cards in an Ableconn PEX-CF106 Adapter Card in a Gigabyte Aorus Master X570 motherboard with an AMD Ryzen 9 5950X 4.9GHz CPU and 32GB RAM, in Windows 10 Pro using Crystal Disk Mark (1GB file size). Sustained write speeds up to 800MB/s were observed. Performance will vary depending on host hardware, software, usage, and Atlas Pro CFexpress card used.