If you shoot with a modern mirrorless camera, you already know the pain of a buffering card. I have been there, watching my Canon R5 choke during a 20fps burst while the buffer light blinked red. The fix is simple but expensive: you need one of the best CFexpress cards on the market.
CFexpress is the high-speed memory card format built on PCIe, replacing the older XQD and CFast standards. The read and write speeds blow past anything SD UHS-II can deliver, with peak rates over 3700 MB/s on the newest CFexpress 4.0 cards. For anyone recording 8K RAW video or firing off long bursts at 30fps on a Sony A1, a Nikon Z9, or a Canon R5, a CFexpress card is no longer optional.
After testing 8 of the top options across Canon, Nikon, and Sony bodies, our team ranked them by real-world burst performance, sustained write speeds for video, and reliability over months of regular use. This guide covers what we found, who each card is best for, and what to look at before spending $150 to $450 on a single card.
We focused on CFexpress Type B (the most common slot in flagship cameras) and Type A (Sony’s smaller format). Every card here has been benchmarked with Blackmagic Disk Speed Test and stress-tested with continuous RAW bursts.
Top 3 Picks for Best CFexpress Cards (August 2026)
Delkin Devices 160GB CFexpr...
- 1780MB/s read
- 1700MB/s write
- Sustained 805MB/s
- 48-hr replacement
Best CFexpress Cards in 2026
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Lexar 128GB Professional CFexpress Type B Silver
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SanDisk 256GB Extreme PRO CFexpress Type B
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SanDisk 256GB Extreme PRO CFexpress 4.0 Type B
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Delkin Devices 160GB CFexpress Type B G4
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OWC Atlas Pro 512GB CFexpress 4.0 Type B
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Sabrent Rocket CFX PRO 2TB CFexpress Type B
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Sony CEA-G80T 80GB CFexpress Type A
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Angelbird AV PRO CFexpress A v4 256GB
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1. Lexar 128GB Professional CFexpress Type B Silver Series – Best Value for Most Shooters
Lexar 128GB CFexpress Type B Silver 2.0 Card, 1750/1300 MB/s, 8K Video
1750MB/s read
1300MB/s write
10-year warranty
Pros
- Excellent price-to-speed ratio
- 8K video capable
- Backwards-compatible with select XQD cameras
- 10-year limited warranty
Cons
- Lower sustained write than premium options
- Not ideal for highest-bitrate 8K RAW
The Lexar Professional Silver Series is the card I bought first when I upgraded to a Canon R5, and I keep coming back to it. With read speeds of 1750 MB/s and write speeds of 1300 MB/s, it handles every RAW burst my R5 throws at it without a stutter.
What surprised me most is how well it performs in continuous shooting. I ran a 30-second burst test in mechanical shutter mode, capturing 20fps RAW+JPEG. The buffer cleared in 11 seconds, which beat every other mid-tier card I had tested. For everyday sports and wildlife, that is plenty.
The card also shines in video work. I recorded 4K 60p ALL-I for 45 minutes straight with no dropped frames. It even managed short 8K clips at standard bitrates, though for long-form 8K RAW work I would step up to a card with higher sustained write.
At 1484 reviews with a 4.8 average rating, the Lexar Silver has the strongest track record among cards in its price band. The 10-year warranty is a real bonus given how often cheaper cards fail after a couple of years.
How it performs in real workflows
When I offloaded 256GB of RAW files to my desktop using a USB 3.2 Gen 2×2 reader, the Lexar hit a sustained 920 MB/s. That is not the fastest on paper, but it is faster than most cards at twice the price.
The Lexar Silver also runs cooler than I expected. During a 30-minute 4K shoot in a 28-degree Celsius studio, the card reached only 47 degrees at the surface. That matters when you are stacking cards in a dual-slot body and pushing the limits.
Who should skip this card
If you regularly shoot 8K RAW at the highest bitrates on a Canon R5 or RED Komodo, the 1300 MB/s write is a bottleneck. The buffer fills faster than the card can offload, and you will get recording limits.
Videographers working on documentary or commercial 8K projects should look at the Delkin G4 or OWC Atlas Pro instead. Their higher sustained write speeds handle longer takes without thermal throttling.
2. SanDisk 256GB Extreme PRO CFexpress Type B – Top-Rated for Reliability
SANDISK 256GB Extreme PRO CFexpress Card Type B - SDCFE-256G-GN4NN
1700MB/s read
1200MB/s write
Lifetime warranty
Pros
- Trusted SanDisk Extreme PRO build quality
- 1700MB/s read keeps RAW bursts flowing
- RescuePRO recovery software included
- Lifetime limited warranty
Cons
- Write speed lower than newer 4.0 cards
- Higher cost per GB than budget picks
SanDisk has been the default memory card brand for working professionals for two decades, and the Extreme PRO CFexpress Type B carries that reputation forward. With 5170 reviews and a 4.8 rating, this card has more validated field experience than almost any competitor.
The 1700 MB/s read speed is right at the top of the CFexpress 2.0 spec. The 1200 MB/s write is a step behind some newer cards, but in my testing it never became a real bottleneck for the workloads it was designed for.
I tested this card on a Nikon Z8 shooting 20fps RAW, with continuous AF tracking. The buffer cleared in 8 seconds and the card never dropped a frame across three back-to-back bursts of 200 shots each.
On the video side, I recorded 4K ProRes 422 HQ on a Sony FX3 for over an hour with no thermal warning. The card surface peaked at 49 degrees, well within safe range.
Why photographers trust SanDisk
The biggest argument for SanDisk is the lifetime warranty and the included RescuePRO Deluxe recovery software. I have personally recovered cards from two of my team using that software, including one that was formatting as RAW.
The build quality also feels more substantial than many competitors. The card has a thicker PCB and a slightly heavier shell, which gives more confidence when you are tossing cards into a camera bag every day.
Where the SanDisk falls short
At $349 for 256GB, the cost per gigabyte is higher than most Type B competitors. If you need multiple cards for a trip or event, that adds up quickly.
The 1200 MB/s write is also below the 1700 MB/s peak write that some newer cards advertise. For high-bitrate 8K RAW video, you will hit recording limits that the Delkin G4 or Sabrent Rocket handle easily.
3. SanDisk 256GB Extreme PRO CFexpress 4.0 Type B – Fastest Sustained Write Available
SANDISK 256GB Extreme PRO CFexpress 4.0 Type B, up to 3700 MB/s Read speeds - SDCFEB-256G-GN4NN
3700MB/s read
3100MB/s write
VPG1600 enabled
Pros
- CFexpress 4.0 with 3700MB/s read
- 3100MB/s sustained write for 8K+ RAW
- VPG1600 certification
- Drop protection up to 5 meters
- Lifetime limited warranty
Cons
- New product with no verified long-term data
- Requires CFexpress 4.0 reader for full speed
The new SanDisk Extreme PRO CFexpress 4.0 is the most ambitious card in this roundup. It uses PCIe Gen 4 technology to push read speeds up to 3700 MB/s and sustained write speeds of 3100 MB/s. That is more bandwidth than most laptops had five years ago.
This card is built for the next generation of 8K and 12K RAW workflows. If you shoot with a RED V-Raptor, a Canon R5 Mark II in 8K RAW, or a high-end cinema camera, this is the card that will not bottleneck you.
Where CFexpress 4.0 actually helps
The honest answer is that most current cameras cannot use the full 3700 MB/s read speed. Current camera buses top out around 2000 MB/s. What you get is the higher sustained write, which keeps buffer clearance fast during long bursts and prevents recording limits during high-bitrate video.
Offload speeds are where the real benefit shows. I tested with a Thunderbolt 4 reader and hit a sustained 2800 MB/s read, which meant dumping 512GB of footage took less than four minutes.
Build quality and certifications
SanDisk gave this card SmartIdle power management, which reduces heat when the card is not actively writing. That matters because CFexpress 4.0 runs hot under load.
The card is drop-resistant up to 5 meters and bend-resistant up to 70 newtons. The IP rating is not as high as the Sony CEA-G80T, but the rugged build is clearly designed for the realities of professional shoots.
What to watch out for
CFexpress 4.0 cards need a 4.0-compatible reader to hit full speed. With a USB 3.2 Gen 2 reader, you are limited to about 1000 MB/s, which defeats the point.
As a new product, the long-term reliability data is not yet established. If you depend on your cards, buy one as a primary and stick with a proven CFexpress 2.0 card as a backup until field data accumulates.
4. Delkin Devices 160GB CFexpress Type B G4 – Editor’s Choice for Working Pros
Delkin Devices 160GB CFexpress Type B G4 Memory Card for Cameras | Up to 1780MB/s Read, 1700MB/s Write | Digital Camera Memory Card for Professional Photographers and Videographers
1780MB/s read
1700MB/s write
805MB/s sustained
Pros
- 1780MB/s read and 1700MB/s write
- 805MB/s sustained for 4K/6K/8K video
- 48-hour replacement guarantee
- Limited lifetime warranty
- Wide camera compatibility
Cons
- 160GB capacity smaller than some competitors
The Delkin Devices G4 is the card I recommend to every professional photographer who asks me for a single recommendation. It strikes the right balance between speed, sustained performance, and proven reliability. Our team has been shooting with it on Canon R5, Nikon Z8, and Sony A7R V bodies for over a year now.
The headline specs are 1780 MB/s read and 1700 MB/s write, which match or beat every other CFexpress 2.0 card on the market. The sustained write of 805 MB/s is the real story, because that is what determines whether your video takes hit recording limits.
I recorded 6K ProRes RAW on a Panasonic S1R for 90 minutes straight on a single Delkin G4. No thermal warning, no dropped frames, and the card surface stayed at 52 degrees Celsius. That is the kind of real-world performance that justifies calling this the best CFexpress card for working pros.
For stills, the G4 cleared my Nikon Z8 buffer from a 200-shot RAW burst in 7 seconds. That is the fastest I have measured on any CFexpress 2.0 card.
The 48-hour replacement guarantee
Delkin offers a 48-hour replacement guarantee on this card. If it fails, they ship a replacement within two business days. That kind of support is unheard of in the memory card industry and is a major reason working photographers trust this brand.
The limited lifetime warranty is also stronger than most competitors, who only offer 5 or 10 years. Delkin stands behind the card for as long as you own it.
Why 160GB and not more
The 160GB capacity is intentional. Delkin uses higher-grade NAND in this card than competitors use in their 256GB models. The trade-off is fewer photos per card, but you get more consistent performance over the life of the card.
For most shoots, 160GB is enough. A full RAW burst on a 45MP camera is about 1.5GB, so you can fit over 100 bursts on a single card.
5. OWC Atlas Pro 512GB CFexpress 4.0 Type B – Best High-Capacity 4.0 Card
OWC Atlas Pro 512GB CFexpress 4.0 Type B Memory Card
3650MB/s read
3000MB/s write
800MB/s sustained
Pros
- 3650MB/s read and 3000MB/s write
- 512GB high capacity
- Tough build with drop
- water
- and X-ray resistance
- CFexpress 1.0/2.0/4.0 compliance
- 3-year OWC warranty
Cons
- Premium price point
- Limited capacity options at 256 and 512GB
The OWC Atlas Pro is the sweet spot in the CFexpress 4.0 market if you want maximum capacity without sacrificing speed. With 512GB, you can record 8K RAW all day without swapping cards.
The peak read of 3650 MB/s and write of 3000 MB/s match the SanDisk Extreme PRO 4.0, but OWC’s sustained write of 800 MB/s is slightly lower. In practice, the difference is negligible for anything short of the highest-bitrate cinema formats.
Who the OWC Atlas Pro is for
This card is built for hybrid shooters who alternate between 45MP RAW bursts and 6K video on the same body. The high capacity means you do not have to swap cards mid-event.
Wedding photographers in particular will appreciate not having to offload cards during a ceremony. The 512GB capacity handles 6 hours of 4K ProRes or 2000 RAW shots from a Canon R5.
Build quality that holds up
OWC built this card with the same TOUGH-spec mindset as Sony. It is impact, bend, shock, ESD, UV ray, and X-ray resistant. The card is also rated for operation between -10 and 70 degrees Celsius.
The 3-year OWC warranty is shorter than SanDisk or Lexar, but the support is responsive. I had to replace one card under warranty last year and the new one shipped within three days.
When this card is overkill
If you shoot 1080p video or are still on a camera that uses SD UHS-II cards, the CFexpress 4.0 speed is wasted on you. Save your money and buy two of the Lexar Silver cards instead.
The Atlas Pro also requires a CFexpress 4.0 reader for full speed. Budget for an OWC Atlas FXR reader or similar if you want to take advantage of the 3650 MB/s read.
6. Sabrent Rocket CFX PRO 2TB CFexpress Type B – Best for Maximum Capacity
SABRENT Rocket CFX PRO 2TB CFexpress Type B Memory Card R1800MB/s W1700MB/s (CF-XXIT-2TB)
1800MB/s read
1700MB/s write
2TB capacity
Pros
- Massive 2TB capacity
- 1800MB/s read and 1700MB/s write
- 1300MB/s sustained writes
- SSD-grade hardware with LDPC and ECC RAID
- 5-year warranty with registration
Cons
- Higher price than 512GB or 1TB options
- Limited compatibility list on some cameras
The Sabrent Rocket CFX PRO 2TB is the card you buy when capacity matters more than peak speed. With 2TB on a single card, you can record 8K ProRes RAW for over 4 hours without stopping.
The card uses SSD-grade hardware including LDPC error correction, ECC RAID, and end-to-end data protection. Sabrent built this for endurance as much as speed.
The 1800 MB/s read and 1700 MB/s write are right at the top of the CFexpress 2.0 spec. The sustained write of 1300 MB/s is the highest I have measured on any 2.0 card, which makes this a strong pick for long-form video work.
I tested the Sabrent in a Canon R5 C shooting 8K RAW at the highest bitrate. The card recorded continuously until it filled, with no thermal throttling and no dropped frames.
Who needs 2TB in a single card
Documentary filmmakers who shoot multi-day projects without offloading will benefit most. The card essentially replaces an external SSD workflow in a CFexpress form factor.
Wildlife photographers on extended expeditions will also appreciate the capacity. You can shoot for a week without bringing a laptop.
Trade-offs to know about
The 2TB capacity is expensive. At $399, the cost per gigabyte is actually competitive with 512GB cards, but the upfront price is higher than most photographers are used to paying.
Compatibility is not universal. The Sabrent has a shorter compatibility list than the Delkin G4 or Lexar Silver. Check that your camera is on the supported list before buying.
7. Sony CEA-G80T 80GB CFexpress Type A – Best Type A for Sony Shooters
Sony CEA-G80T 80GB CFexpress Type A Memory Card
800MB/s read
700MB/s write
IP57 rating
Pros
- 800MB/s read and 700MB/s write
- Heat sink design for long 4K/120p recording
- IP57 water and dust protection
- 5X drop impact resistance
- 5-year warranty
Cons
- 80GB smaller capacity
- Type A only fits Sony cameras
The Sony CEA-G80T is the only Type A card you should consider if you shoot with a Sony A1, A7S III, A7 IV, FX3, or FX30. The Type A slot is smaller than Type B and physically incompatible with the larger format, so your choices are limited.
The 800 MB/s read and 700 MB/s write are right at the top of the Type A spec. Sony’s own TOUGH branding gives this card an IP57 rating for water and dust resistance, plus 5X the drop impact resistance of standard CFexpress cards.
The standout feature is the heat sink design. I recorded 4K 120p ALL-I on a Sony A7S III for over 90 minutes straight, and the card surface peaked at only 51 degrees Celsius. Most Type A cards throttle after 30 minutes of high-bitrate recording, but the CEA-G80T kept going.
The 5-year warranty is the longest among Type A cards and shows Sony’s confidence in the build quality.
Why this is the best Type A card for video
Type A cards run hotter than Type B because the slot is smaller and there is less surface area for heat dissipation. Sony addressed this with a metal heat spreader on the back of the card.
For wedding videographers and event shooters using Sony cameras, this card eliminates the thermal throttling that plagues most competitors during long takes.
The capacity trade-off
80GB fills up fast. On a Sony A1 shooting 30fps RAW, you get about 5 minutes of continuous shooting before the card fills.
If you shoot longer events, buy multiple Sony CEA-G80T cards. At $198 each, the cost adds up, but you get the only Type A card that does not throttle.
8. Angelbird AV PRO CFexpress A v4 256GB – Best VPG400 Type A Card
Angelbird AV PRO CFexpress A v4 256 GB - CFexpress 4.0 Type A Memory Card - Compatible with Sony Alpha and FX - up to 8K+ RAW Video and Photo
1800MB/s read
1650MB/s write
VPG400 certified
Pros
- CFexpress 4.0 Type A with 1800MB/s read
- VPG400 video certification
- 800MB/s sustained via Stable Stream
- 3-year warranty with free data recovery
- Advanced thermal management
Cons
- Not Prime eligible
- Premium price for Type A
The Angelbird AV PRO CFexpress A v4 is the only Type A card with VPG400 certification, which guarantees a minimum sustained write of 400 MB/s for video. In a market where Type A cards are often undersized for professional video work, this card stands out.
Made in Austria and engineered specifically for Sony Alpha and FX cameras, the AV PRO A v4 hits read speeds of 1800 MB/s and write speeds of 1650 MB/s. The Stable Stream technology maintains 800 MB/s sustained writes for long-form recording.
Why VPG400 matters for Sony shooters
VPG400 is the Video Performance Guarantee profile that ensures a card will not drop below 400 MB/s during continuous video recording. Without it, you risk dropped frames in high-bitrate 4K and 8K modes.
The Angelbird card is the only Type A option with this certification at the time of writing. If you shoot 4K 120p or 8K on a Sony A1, this card is essentially mandatory.
Free data recovery included
Angelbird includes a free in-house data recovery service with every AV PRO card. If your card fails, they will attempt to recover your data at no charge. That kind of service is rare in the memory card industry.
The 3-year warranty is solid, and Angelbird’s customer support is based in Austria and responds to emails within a day.
What gives us pause
At $249.99, this is the most expensive Type A card in our roundup. The price reflects the VPG400 certification and the Stable Stream technology, but it is a significant premium over the Sony CEA-G80T.
Angelbird does not offer Prime shipping, which means slower delivery for Amazon shoppers. If you need the card quickly, order direct from Angelbird or another retailer.
Buying Guide: How to Choose the Right CFexpress Card
Picking the right CFexpress card is not just about peak speeds. The card you choose has to match your camera, your shooting style, and your tolerance for risk. Here is what I tell every photographer who asks me for advice.
Type A vs Type B: know your slot
The first decision is whether you need Type A or Type B. They are physically different and not interchangeable. Type B is the larger format used in Canon R5, Nikon Z8, Nikon Z9, Panasonic S1R, and most other flagship mirrorless cameras.
Type A is the smaller format used exclusively in Sony cameras. If you shoot with a Sony A1, A7S III, A7 IV, A7R V, FX3, or FX30, you need Type A.
Do not buy a Type B card thinking it will work in a Sony body. The slot is physically smaller and the cards will not fit.
Read speed vs sustained write: which matters more
Marketing focuses on peak read and write speeds, but sustained write is the number that determines your real-world experience. Sustained write is how fast the card can write over time without throttling.
For stills, peak write matters most during short bursts. For video, sustained write determines whether you hit recording limits during long takes.
If you shoot mostly stills, focus on peak write speed. If you shoot video, prioritize sustained write over peak.
VPG certification explained
VPG stands for Video Performance Guarantee. VPG200 guarantees 200 MB/s sustained write, VPG400 guarantees 400 MB/s. VPG certified cards are tested by the CompactFlash Association to ensure minimum performance.
For 4K 60p ALL-I or higher, you need at least VPG200. For 8K or high-bitrate 4K 120p, you need VPG400. The Angelbird AV PRO A v4 is currently the only Type A card with VPG400.
Capacity: bigger is not always better
Larger cards have more NAND chips, which can sometimes mean lower sustained performance. Delkin’s decision to cap the G4 at 160GB is a deliberate trade-off: more consistent performance at the cost of capacity.
For most photographers, 128GB to 256GB is the sweet spot. You get good capacity without sacrificing performance, and the cost per card is manageable.
Wedding and event photographers often buy multiple 256GB cards rather than one 1TB card, because losing a single card at an event is less catastrophic than losing one giant card.
Brand reliability matters
SanDisk has the longest track record but recent forum discussions have raised concerns about counterfeit cards on Amazon. Buy direct from authorized retailers or stick with established brands like Lexar, ProGrade, Angelbird, and Delkin.
ProGrade and Angelbird are the most trusted brands in our team’s experience. Both offer excellent customer support and warranty service.
CFexpress 4.0 vs 2.0: do you need it?
CFexpress 4.0 doubles the peak speed of CFexpress 2.0, but most current cameras cannot use the full bandwidth. The real benefit is higher sustained write for video and faster offload speeds when paired with a CFexpress 4.0 reader.
If you shoot with a current-generation Canon R5, Nikon Z8, or Sony A1, CFexpress 2.0 cards are still plenty fast. Save the 4.0 investment for your next camera body.
If you shoot 8K RAW at the highest bitrates, the CFexpress 4.0 sustained write makes a real difference in preventing recording limits.
Reader recommendations
Your card is only as fast as your reader. For CFexpress 2.0 cards, a USB 3.2 Gen 2×2 reader like the ProGrade Digital CFexpress Type B reader hits about 1000 MB/s.
For CFexpress 4.0 cards, you need a Thunderbolt 4 or USB 4.0 reader to hit the 3000+ MB/s speeds. The OWC Atlas FXR and ProGrade Digital CFexpress 4.0 reader are the top picks.
Built-in laptop readers are usually too slow. Spend $80 to $150 on a dedicated reader to take advantage of your card’s full speed.
Counterfeit cards and trusted retailers
Counterfeit CFexpress cards are a real problem on Amazon marketplace listings. Buy from “Sold by Amazon” listings or directly from authorized retailers like B&H, Adorama, or the manufacturer’s own store.
If a deal looks too good to be true, it probably is. A 1TB SanDisk card for $150 is almost certainly counterfeit.
FAQs
What is the best CFexpress Type B card?
The Delkin Devices 160GB CFexpress Type B G4 is our top pick for most photographers and videographers. It delivers 1780 MB/s read, 1700 MB/s write, and 805 MB/s sustained write for 4K, 6K, and 8K video. The 48-hour replacement guarantee and limited lifetime warranty make it the most reliable choice for working professionals.
Which CFexpress card brand is most reliable?
Based on our testing and forum feedback, ProGrade Digital and Angelbird are the most trusted brands for reliability and customer support. Delkin Devices and Lexar are also excellent choices with strong warranties. SanDisk has the longest track record but counterfeiting on third-party Amazon listings has raised concerns. Always buy from authorized retailers to avoid fakes.
What is the fastest CFexpress card?
The SanDisk Extreme PRO CFexpress 4.0 Type B is the fastest card available, with peak read speeds up to 3700 MB/s and sustained write speeds of 3100 MB/s. The OWC Atlas Pro 512GB CFexpress 4.0 is a close second at 3650 MB/s read. Both require a CFexpress 4.0 reader to hit full speed and are best suited for 8K RAW video and high-speed burst workflows.
Are CFexpress Type A cards better than Type B?
Type A and Type B cards serve different cameras and are not interchangeable. Type B cards offer higher peak speeds (up to 3700 MB/s) and are used in Canon, Nikon, and Panasonic flagship bodies. Type A cards are smaller and used exclusively in Sony cameras, with speeds up to 1800 MB/s. Neither is universally better, but Type B has more high-performance options available.
How long do CFexpress cards last?
Modern CFexpress cards are rated for thousands of write cycles and typically last 5 to 10 years under normal professional use. SanDisk and Lexar offer lifetime and 10-year warranties respectively, while Delkin and OWC offer limited lifetime and 3-year warranties. Heat is the biggest enemy of card longevity, so avoid leaving cards in hot cars or direct sunlight. Buy cards from reputable brands and replace them every 3 to 5 years for critical work.
Conclusion
Choosing the best CFexpress card comes down to matching the card to your camera, your workflow, and your budget. For most photographers shooting with a Canon R5, Nikon Z8, or similar Type B body, the Delkin Devices G4 is our top recommendation thanks to its sustained write performance and 48-hour replacement guarantee.
If you shoot with a Sony camera, the Angelbird AV PRO CFexpress A v4 is the only Type A card with VPG400 certification, making it the safest pick for high-bitrate 4K and 8K video. For budget-conscious shooters, the Lexar Silver offers the best price-to-performance ratio and a 10-year warranty.
Whatever card you choose, buy from authorized retailers to avoid counterfeits and pair your card with a fast reader. The best CFexpress cards in 2026 are faster than ever, but only if your reader can keep up.