Head-to-head · Best Cfexpress Type B Cards

Lexar Professional CFexpress Type B Card SILVER Series vs OWC Atlas Pro CFexpress 4.0 Type B (512GB)

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

Lexar Professional CFexpress Type B Card SILVER Series and OWC Atlas Pro CFexpress 4.0 Type B (512GB) score essentially the same (4.5 vs 4.5). Pick the one whose trade-offs match your priorities — the strengths and watch-outs below are where they actually differ.

Ranked #2 in Best Cfexpress Type B Cards

Lexar Professional CFexpress Type B Card SILVER Series

4.5

3 sources$234.99as of Oct 29

The Lexar Professional CFexpress Type B Card SILVER Series is a CFexpress 2.0 card rated at up to 1750MB/s read and 1300MB/s write. Digital Camera World gave it 5 out of 5 stars after its 128GB sample matched a SanDisk Extreme PRO on read speed and beat it on write speed, Amateur Photographer rated the 128GB card 4.5 out of 5 and called the series possibly the best value in CFexpress Type B, and Camera Jabber gave the 1TB version 5 out of 5. The trade-off is sustained write speed: the 128GB and 256GB sizes are rated at 480MB/s, well below Lexar's own Gold cards, and Digital Camera World notes that no recovery software is included.

Strengths

— Read speed matched a SanDisk Extreme PRO in Digital Camera World's 25GB file-copy test, with faster write speed
— Ran reliably in the Fujifilm GFX100 II and Leica SL3 for Amateur Photographer
— Backwards-compatible with select XQD cameras

Watch-outs

— 128GB and 256GB sizes are rated at only 480MB/s sustained write
— No recovery software included, unlike SanDisk's Extreme PRO cards (Digital Camera World)
— Not the fastest CFexpress card available (Amateur Photographer)

$234.99 · Check Price on Amazon Full review →

Ranked #3 in Best Cfexpress Type B Cards

OWC Atlas Pro CFexpress 4.0 Type B (512GB)

4.5

1 source$399.99as of Nov 3

The OWC Atlas Pro CFexpress 4.0 Type B memory card delivers exceptional performance with peak write speeds up to 3,000MB/s and read speeds up to 3,650MB/s, making it ideal for professional photographers and filmmakers capturing 6K video or shooting at high frame rates. It offers robust durability against environmental challenges and supports sustained write speeds up to 800MB/s, though its $399.99 price point and requirement for a separate USB4 reader for full performance may deter some users.

Strengths

— Delivers peak write speeds up to 3,000MB/s and read speeds up to 3,650MB/s
— Supports sustained write speeds up to 800MB/s for professional workflows
— Durable design resistant to shocks, drops, extreme temperatures, UV rays, and X-rays

Watch-outs

— Expensive, priced at $399.99 for the 512GB model

$399.99 · Check Price on Amazon Full review →

How they stack up

Lexar Professional CFexpress Type B Card SILVER Series

The Lexar SILVER is a CFexpress 2.0 card rated at 1750MB/s read and 1300MB/s write, about half the 3650MB/s read and 3000MB/s write listed for the OWC Atlas Pro and OWC Atlas Ultra CFexpress 4.0 cards and close to the SanDisk Pro-Cinema's 1700MB/s read and 1500MB/s write. Its 480MB/s sustained write rating in the 128GB and 256GB sizes is below the 800MB/s listed for the OWC Atlas Pro and the Pro-Cinema's 1400MB/s minimum. Its 10-year limited warranty is longer than the 3-year warranty listed for the OWC Atlas Pro.

OWC Atlas Pro CFexpress 4.0 Type B (512GB)

The OWC CF Exp B 4.0 512 GB card delivers peak write speeds up to 3000 MB/s, double the SanDisk Pro-Cinema's 1500 MB/s peak write rating, though its 800 MB/s sustained write figure is below the Pro-Cinema's 1400 MB/s minimum. Its 3650 MB/s read and 3000 MB/s write ratings are roughly twice the 1750 MB/s and 1300 MB/s listed for the Lexar Professional SILVER, a CFexpress 2.0 card.

Specs side-by-side

Spec	Lexar Professional CFexpress Type B Card SILVER Series	OWC Atlas Pro CFexpress 4.0 Type B (512GB)
Capacity	128GB or 256GB (linked listing: 256GB)	512GB
Read Speed	Up to 1750MB/s	3,650MB/s
Write Speed	Up to 1300MB/s	3,000MB/s
Sustained Write Speed	480MB/s	up to 800MB/s
Interface	PCIe 3.0 x2 (CFexpress 2.0)	CFexpress 4.0
Card Type	CFexpress Type B	CFexpress Type B
Operating Temperature	-10°C to 70°C	—
Warranty	10-year limited warranty	3-Year OWC Limited Warranty
Sustained Write	—	800 MB/s

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