Name: 325GB OWC Atlas Ultra CFexpress 2.0 Type B Memory Card (2-Pack)
Brand: OWC
SKU: OWCCFXB2U0325K

OWC Atlas Ultra CFexpress

High-performance, highest quality memory card for the most demanding video recording uses of professional filmmakers and continuous burst mode shooting by advanced photographers.

OWC Altas Ultra CFexpress Memory Card Lineup

The Fastest, Most Reliable CFexpress Card

When you need the fastest, most reliable CFexpress card, the Atlas Ultra CFexpress is ready to take you to the edge. With incredibly high minimum sustained write speeds up to 1500MB/s, this is the perfect media card for pro filmmakers or extreme action photographers to unleash their cameras capabilities.

Professional filmmakers can capture amazingly life-like 8K RAW video in slow-motion with cinema cameras like the Nikon Z9, Canon R5C, and RED V-Raptor. As a testament to its quality, the Atlas Ultra CFexpress is one of only several media cards that meets RED Digital Cinema’s stringent test standards and has been officially approved for use with their RED V-Raptor Cinema camera.

A 165GB capacity version is ideal for advanced sports and wildlife photographers seeking the fastest, most cost-effective solution to clear their camera buffer and/or shoot continuously in ultra-high resolution burst mode.

Compatibility You Can Count On

recommended

compatible

compatible, but not at highest resolution settings


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

Blackmagic Pyxis 6K
Blackmagic Cinema 6K

Canon C300 Mark III
Canon C400
Canon C500 Mark II
Canon 1DX Mark III
Canon EOS R1
Canon EOS R3
Canon EOS R5 Mark II
Canon EOS R5
Canon EOS R5C

Fujifilm X-H2 / X-H2S
Fujifilm GFX100 II

Leica SL3

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

Panasonic GH6
Panasonic GH7
Panasonic S1 / S1R

PhaseOne XF IQ4
PhaseOne XC IQ4
PhaseOne P5

RED KOMODO-X	¹
RED V-RAPTOR / V-RAPTOR XL	¹
RED V-RAPTOR [X] / V-RAPTOR XL [X]	¹

Sony Burano	²	²	²

Not compatible with highest video resolution settings in the camera
Card is fully compatible, but camera will report card as "unsupported media."

Quality In = Quality Output

Thanks to an extremely thorough quality control process, you can work fearlessly knowing that your Atlas Ultra 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 Ultra CFexpress is the difference-maker for your high-end workflows and maximum camera setting uses.

Ultra-Speed

Up to 1700MB/s write and 1850MB/s read real-world speeds for the most advanced use cases including fast burst RAW image sequences and high-bitrate video recording up to 8K¹

Dependable

Delivers up to 1500MB/s minimum sustained write speed

Compatible

Fully compatible with a wide variety of DSLR and mirrorless cameras

Compliant

Fully meets CFexpress Type B 1.0 and 2.0 specifications

Tough

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

Shoot, Store, and Swap… Anywhere

Atlas Ultra 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 Ultra CFexpress cards have your work – and your back – well protected.

Who is it for?

Advanced action sports photographers
Advanced outdoor/wildlife photographers
Professional video content creators
Film production companies
Feature film studios

What is it for?

Capturing a snowboarder doing an aerial trick
Capturing a loon landing on a lake
Branded, huge following influencers needing to create enhanced, professional-looking content for their channels
Capturing highest quality footage for a blockbuster movie

OWC Atlas Ultra CFexpress Memory Card Lineup

Truth in Numbers

Up to 1700MB/s Write Speed

Up to 1850MB/s Read Speed

Up to Guaranteed Minimum 1500MB/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 Ultra CFexpress cards for reliable peak performance up to 1700MB/s write, 1850MB/s read, and 1500MB/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.

Get Maximum Performance from Your Atlas Ultra CFexpress Cards

Details matter when it comes to obtaining the highest performance from your CFexpress card. Only use a high-quality CFexpress Type B memory card reader such as the OWC Atlas FXR that has been specifically designed and extensively test proven to deliver effective heat dissipation so your memory card will deliver maximum sustained throttle-free performance.

If you must use a camera or reader that doesn’t dissipate heat effectively, Atlas Ultra CFexpress cards have built-in protection that automatically reduces speed to prevent heat damage while ensuring a safe to handle temperature.

OWC Atlas Ultra CFexpress Memory Card + OWC Atlas FXR Reader - HD Speed Test screenshot

After intensive stress tests with multiple full capacity cycles, the Atlas FXR reader still delivers consistent sustained 1400MB/s read and 1200MB/s write performance from a 650GB Atlas Ultra CFexpress card while maintaining a safe temperature.

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 1700MB/s write, up to 1850MB/s read peak performance, and up to 1500MB/s minimum sustained write performance was observed based on testing OWC Atlas Ultra CFexpress cards in an Ableconn PEX-CF106 PCI Express 3.0 x4 Host 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). Performance will vary depending on host hardware, software, usage, and Atlas Ultra CFexpress card storage capacity used.