Head-to-head · Best Cfexpress Type B Cards

OWC Atlas Ultra (CFe 4.0) vs SanDisk Pro-Cinema CFexpress Type B (320GB)

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

OWC Atlas Ultra (CFe 4.0) comes out ahead by a clear margin (4.9 vs 4.3). OWC Atlas Ultra (CFe 4.0) is best for: video-first hybrid creators. Read the strengths below before deciding.

Higher ratedRanked #1 in Best Cfexpress Type B Cards

OWC Atlas Ultra (CFe 4.0)

4.9

1 source

TechRadar called the OWC Atlas Ultra CFexpress Type-B 1TB a fast and durable memory card that unlocks the full potential of high-resolution cameras. The card delivers impressive read speeds up to 3650MB/s and write speeds up to 3000MB/s, with firmware upgradeability via OWC Innergize software. While it's significantly faster than traditional SD cards, its premium pricing and requirement for a specific OWC reader for full software support make it a niche choice for professional creatives who demand top-tier performance. Newsshooter noted its exceptional speed, though the cost remains a barrier for casual users.

Strengths

— Enhanced speed performance with read speeds up to 3650MB/s and write speeds up to 3000MB/s
— Firmware upgradeability supported by OWC Innergize software
— Durable build quality resistant to UV, shock, drop, and extreme temperatures

Watch-outs

— Requires OWC Reader for full Innergize software functionality
— The product is relatively expensive.

Buy at bhphotovideo.com Full review →

Ranked #4 in Best Cfexpress Type B Cards

SanDisk Pro-Cinema CFexpress Type B (320GB)

4.3

1 source

SanDisk's Pro-Cinema is a CFexpress 2.0 Type B card built around a 1400MB/s minimum sustained write speed, which earns it VPG400 certification. Digital Camera World benchmarked it at 1646MB/s read and 1441MB/s write, close to the 1700/1500MB/s SanDisk claims, and recorded 6K 60p RAW on a Nikon Z6 III without dropped frames. It comes in only 320GB and 640GB, and the outlet found it relatively expensive.

Strengths

— Benchmarked at 1646MB/s read and 1441MB/s write by Digital Camera World, close to SanDisk's claims
— 1400MB/s minimum sustained write speed with VPG400 certification
— Recorded 6K 60p RAW on a Nikon Z6 III with no glitches or dropped frames

Watch-outs

— Only two capacities, 320GB and 640GB
— Relatively expensive next to similarly quick cards, per Digital Camera World
— Peak speeds are well short of CFexpress 4.0 cards

Buy at sandisk.com Full review →

How they stack up

OWC Atlas Ultra (CFe 4.0)

The OWC Atlas Ultra CFexpress 4.0 Type B 1TB card delivers read speeds up to 3650 MB/s and write speeds up to 3000 MB/s, about twice the 1700 MB/s read and 1500 MB/s write ratings of the SanDisk Pro-Cinema. Its premium pricing and hardware dependency make it less accessible.

SanDisk Pro-Cinema CFexpress Type B (320GB)

The Pro-Cinema and the Lexar Professional SILVER are the two CFexpress 2.0 cards on this page. The Pro-Cinema's rated 1700MB/s read and 1500MB/s write are close to the Lexar's 1750MB/s and 1300MB/s, and about half the 3650MB/s and 3000MB/s listed for the two OWC CFexpress 4.0 cards. Its 1400MB/s minimum sustained write rating is higher than the 800MB/s sustained figure listed for the OWC Atlas Pro and the 480MB/s listed for the Lexar SILVER.

Specs side-by-side

Spec	OWC Atlas Ultra (CFe 4.0)	SanDisk Pro-Cinema CFexpress Type B (320GB)
Capacity	1TB	320GB (also 640GB)
Read Speed	Up to 3650MB/s	Up to 1700MB/s
Write Speed	Up to 3000MB/s	Up to 1500MB/s
Interface	PCIe 4.0 x2	CFexpress 2.0
Warranty	2 years	—
Card Type	CFexpress Type B	CFexpress Type B
Sustained Write Speed	—	1400MB/s minimum
Certification	—	VPG400

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