325GB OWC Atlas Ultra
only $399.99 $179.99 You Save $220.00

325GB OWC Atlas Ultra

High-Performance CFexpress Type B Memory Card


Mfr P/N: CFXB2U0325 OWC SKU: OWCCFXB2U0325

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

  • Ultra speed: up to 1500MB/s write and 1700MB/s read real-world speeds for the most advanced use cases of professional content creators including fast burst RAW image sequences and high bitrate video recording up to 8K
  • Dependable: delivers 1300MB/s minimum sustained write speed
  • Supportive: fully compatible with a wide variety of DSLR and mirrorless cameras
  • Compliant: fully meets CFexpress 1.0 and 2.0 Type B specifications
  • Tough: impact, bend, shock, ESD, UV ray, and x-ray resistant
  • Complete: includes Innergize™ health, performance, and field upgrade management tool for OWC Atlas Memory Cards
  • 3 Year OWC Limited Warranty
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$179.99
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Additional Options

CFexpress 2.0

325GB
arrow up 325GB $399.99$179.99 in stockIn Stock: Ships Same Day!
650GB
arrow up 650GB $449.99$249.99 in stockIn Stock: Ships Same Day!

CFexpress 4.0

1TB
arrow up 1TB $349.99 in stockIn Stock: Ships Same Day!
2TB
arrow up 2TB $679.99$599.00 in stockIn Stock: Ships Same Day!

Overview

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
2TB OWC Atlas Pro CFexpress Memory Card
560GB OWC Atlas Ultra CFexpress Memory Card
2.0TB OWC Atlas Ultra CFexpress Memory Card

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

  1. Not compatible with highest video resolution settings in the camera
  2. 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.

Production cart

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.

Work with Maximum Confidence and Reliability

OWC Innergize - Health

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.

OWC Innergize - Sanitize

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.

OWC Innergize - Field Upgrade

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.

  1. 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.

IncludesIncludes

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  • (1) OWC Atlas Ultra CFexpress Type B Memory Card
  • (1) Jewel Case
  • 3 Year OWC Limited Warranty

    Memory Card Specification

    • CFexpress 2.0

    Memory Card Type

    • CFexpress Type B

    Total Capacity

    • 325GB

    Sequential Read (Max)

    • Up to 1700 MB/s

    Sequential Write (Max)

    • Up to 1500 MB/s

    Mac OS Compatibility

    • OWC Innergize is currently supported on macOS version 12.x, macOS 13.7.2 and earlier, macOS 14.7.2 and earlier, and macOS 15.2.1 and earlier. We are aware of an issue in macOS 13.7.3, macOS 14.7.3, macOS 15.3.x, released 01/27/25 that makes OWC Innergize unable to be used with OWC Atlas USB4 and USB-C readers. The Thunderbolt interface equipped OWC Atlas FXR reader remains supported in macOS 15.3.x over USB. Apple has been informed of this issue and we are diligently pursuing a resolution.

    Other Requirements

    • Recommended for use with Canon C300 Mark III, Canon C500 Mark II, Canon 1DX Mark III, Canon EOS R3, Canon EOS R5, Canon EOS R5C, Nikon Z6 / Z7, Nikon Z6 II / Z7 II, Nikon D500, Nikon D850, Nikon D5, Nikon D6, Panasonic GH6, and Panasonic S1 / S1R.
    • Also compatible with Nikon Z9, but does not support the highest camera resolution settings.

    Dimensions

    • Height: 0.4 cm (0.1 in)
    • Length: 3.9 cm (1.5 in)
    • Width: 3.0 cm (1.2 in)

    Country of Origin

    • Taiwan

    TAA Compliance

    • Yes

    Ambient Temperature

    • Operating: 14°F to 185°F (-10°C to 85°C)
    • Non-Operating: -4°F to 185°F (-20°C to 85°C)
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