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1-800-275-4576 
High-Performance CFexpress 4.0 Type B Memory Card
Mfr P/N: OWC SKU:
Cost-effective, highest quality memory card for the most demanding needs of professional photographers and the most common use cases of professional filmmakers
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.
recommended
compatible
compatible, but not at highest resolution settings
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Capacity |
256GB - 512GB |
325GB - 650GB |
1.0TB - 2.0TB |
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Generation |
CFexpress 4.0 |
CFexpress 2.0 |
CFexpress 4.0 |
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Max sequential read |
3650MB/s |
1700MB/s |
3650MB/s |
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Max sequential write |
3000MB/s |
1500MB/s |
3000MB/s |
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Min sustained write |
800MB/s |
1300MB/s |
1500MB/s |
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Blackmagic Pyxis 6K |
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Blackmagic Cinema 6K |
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Canon C300 Mark III |
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Canon C400 |
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Canon C500 Mark II |
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Canon 1DX Mark III |
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Canon EOS R1 |
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Canon EOS R3 |
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Canon EOS R5 Mark II |
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Canon EOS R5 |
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Canon EOS R5C |
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Fujifilm X-H2 / X-H2S |
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Fujifilm GFX100 II |
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Leica SL3 |
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Nikon Z9 |
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Nikon Z8 |
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Nikon Z6 III |
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Nikon Z6 II / Z7 II |
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Nikon Z6 / Z7 |
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Nikon D500 |
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Nikon D850 |
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Nikon D5 |
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Nikon D6 |
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Panasonic GH6 |
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Panasonic GH7 |
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Panasonic S1 / S1R |
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PhaseOne XF IQ4 |
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PhaseOne XC IQ4 |
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PhaseOne P5 |
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RED KOMODO-X |
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RED V-RAPTOR / V-RAPTOR XL |
1 |
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RED V-RAPTOR [X] / V-RAPTOR XL [X] |
1 |
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Sony Burano |
2 |
2 |
2 |
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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.
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
Fully compatible with a wide variety of DSLR and mirrorless cameras
Fully compliant up to CFexpress 4.0 Type B specification and meets CFexpress 1.0 and 2.0 specifications
Use with XQD format cameras that have been updated to support CFexpress Type B
Impact, bend, shock, ESD, UV ray, and x-ray resistant
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.
Who is it for?
What is it for?
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.
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.
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™ 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.
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.
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.
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.
