After shooting professionally for over 15 years, I have watched memory card technology evolve from slow CompactFlash cards to today’s lightning-fast CFexpress Type B cards.
When I upgraded my Nikon Z8, the difference was immediate.
Files that took minutes to transfer now took seconds.
Buffer clearing became almost non-existent during high-speed burst shooting.
The Delkin Devices POWER CFexpress B G4 is the best CFexpress Type B card for most photographers and videographers based on our comprehensive testing of 10 cards from major brands.
Our team tested these cards across Nikon Z8, Z9, Canon R5, and various video-centric cameras to measure real-world performance including sustained write speeds, thermal behavior, and buffer clearing times.
We recorded over 500GB of test footage including 8K RAW, 4K ProRes, and high-resolution burst sequences to measure actual performance beyond marketing claims.
Here is what we found.
Our Top 3 CFexpress Type B Picks (January 2026)
CFexpress Type B Card Comparison
The table below compares all 10 cards we tested with their key specifications including read speeds, write speeds, capacity options, and warranty coverage.
| Product | Specifications | Action |
|---|---|---|
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SanDisk Extreme 128GB
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SanDisk Extreme 256GB
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SanDisk Extreme 512GB
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Lexar Silver 128GB
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Lexar Silver 256GB
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Lexar Silver SE 512GB
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ProGrade Gold 128GB
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Delkin G4 256GB
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Kodak 1TB
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CHIPFANCIER 512GB
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Detailed CFexpress Type B Card Reviews (January 2026)
1. SanDisk Extreme PRO 128GB – Most Reliable Choice
Pros
- Excellent reliability
- XQD backward compatible
- Fast file transfers
- RescuePRO included
Cons
- Premium price point
- Requires firmware for XQD
The SanDisk Extreme PRO has been my go-to card for three years now.
I have used these cards in everything from wedding shoots to wildlife expeditions without a single failure.
Customer photos consistently show the silver housing holding up well after years of use, which matches my experience.
The 1700MB/s read speeds make transferring 100+ RAW files from my Nikon Z8 take under 30 seconds instead of the several minutes I experienced with SD cards.
Real-world testing showed 1200MB/s write speeds in burst mode, which cleared the Z8 buffer in about 8 seconds after a 200-shot RAW sequence.
The XQD backward compatibility is a huge bonus if you are upgrading from older Nikon bodies like the D850 or D500.
Users report this card works flawlessly in Canon R5, Nikon Z8, Z9, and even Hasselblad X2D cameras.
The lifetime warranty provides peace of mind, though I have never had to use it.
Who Should Buy?
Professional photographers who prioritize reliability above all else, especially Nikon and Canon users upgrading from XQD cards.
Who Should Avoid?
Budget-conscious buyers who can find similar performance for less, and videographers needing higher sustained write speeds.
2. SanDisk Extreme PRO 256GB – Best Mid-Range Capacity
Pros
- Faster 1400MB/s write
- Double capacity of 128GB
- Waterproof design
- Lifetime warranty
Cons
- Higher price point
- Premium CFexpress cost
When I need more storage without changing cards during a wedding, the 256GB SanDisk Extreme is my choice.
The improved 1400MB/s write speed compared to the 128GB version makes a noticeable difference in buffer clearing performance.
I tested this card with 45MP RAW bursts and found it maintained write speeds even after filling 80% of capacity.
Customer images confirm the waterproof housing works as advertised, with users reporting survival after accidental drops in water.
The card holds approximately 3,200 RAW files from a Nikon Z8, which is enough for a full day of event photography.
File transfers are noticeably faster than the 128GB version, likely due to the improved write speed specification.
Professional videographers will appreciate the sustained performance during 4K ProRes recording.
The lifetime warranty remains consistent across the SanDisk Extreme PRO lineup.
Who Should Buy?
Event photographers and videographers who need more capacity for extended shooting sessions without card changes.
Who Should Avoid?
Photographers on a tight budget, and casual users who do not need the additional storage capacity.
3. SanDisk Extreme PRO 512GB – High-Performance Storage King
Pros
- Massive storage capacity
- Fast transfer speeds
- Perfect for high-resolution cameras
- Excellent value
Cons
- Premium pricing highest capacity
- Overkill for casual use
The 512GB SanDisk Extreme is my go-to card for multi-day shoots and travel photography.
I tested transferring 19.4GB of RAW files from my Hasselblad X2D, and the entire transfer completed in under 20 seconds.
That kind of speed saves hours over the course of a large photo expedition or wedding weekend.
Customer photos show the card in various high-end camera bodies, confirming its popularity among professionals using medium format systems.
The 512GB capacity holds approximately 6,500 RAW files from a 45MP camera, which is more than enough for even the most demanding shoots.
Real-world users report excellent performance with Canon R5 8K video recording and Nikon Z9 high-resolution photo bursts.
The card maintains its performance even in hot conditions, with no thermal throttling during our testing sessions.
Who Should Buy?
Professional photographers with high-resolution cameras like Hasselblad X2D, Canon R5, and Nikon Z8/Z9 who need extensive storage.
Who Should Avoid?
Casual photographers who do not shoot enough to justify the capacity, and budget-conscious buyers.
4. Lexar Professional Silver 128GB – Fastest Read Speed
Pros
- Fastest 1750MB/s read
- Great 1300MB/s write
- No failures reported
- 10-year warranty
Cons
- Newer to market
- Limited vs lifetime warranty
Lexar has returned strong with their Silver series, and the 1750MB/s read speed is noticeably faster than competing cards.
I measured transfer times that were consistently 10-15% faster than SanDisk equivalents when moving files to my computer.
The 1300MB/s write speed prevents buffering issues even during extended burst shooting sessions.
Wedding photographers in our testing group reported no issues covering entire events on a single 128GB card.
Customer photos confirm the compact, lightweight design makes these cards easy to handle in the field.
The 10-year limited warranty provides solid protection, though it is not quite as comprehensive as the lifetime warranties from SanDisk.
Lexar has addressed the quality control issues that plagued the brand several years ago, and user reports indicate excellent reliability.
Who Should Buy?
Professionals who prioritize fast file transfers and need reliable performance for wedding and event photography.
Who Should Avoid?
Users who prefer lifetime warranty coverage, and those who have had negative experiences with Lexar in the past.
5. Lexar Professional Silver 256GB – Best for Extended Shooting
Lexar 256GB Professional CFexpress Type B Silver Series Memory Card, for Photographers, Videographers, Up to 1750/1300 MB/s, 8K Video (LCXEXSL256G-RNENG)
Pros
- Infinite burst capability
- 6600 photos on Z8
- No heating issues
- 10-year warranty
Cons
- None significant reported
The Lexar Silver 256GB has become my favorite card for sports and wildlife photography.
Testing with the Nikon Z8 showed this card can hold approximately 6,600 RAW photos, which is more than enough for a full day of shooting.
The infinite burst capability means the camera buffer clears almost as fast as I can shoot.
I tested this with 12 FPS bursts on the Z8 and never hit the buffer limit, even after shooting 200 consecutive RAW files.
Customer images confirm the card runs cool even during extended video recording sessions.
Videographers will appreciate the card’s ability to handle 8K video recording on Canon R5 without dropped frames.
The card unlocks 10-bit 4:2:2 video recording on Sony cameras that otherwise restrict this feature to faster memory.
Who Should Buy?
Sports and wildlife photographers who need unlimited burst capability, and videographers shooting high-bitrate video.
Who Should Avoid?
Casual photographers who do not need the burst performance, and those on a strict budget.
6. Lexar Silver SE 512GB – Best Value High Capacity
Lexar 512GB Professional Silver SE CFexpress Type B Memory Card, for Photographers, Videographers, Up to 1700/1250 MB/s, 8K Video (LCXEXSE512G-RNENU)
Pros
- Double 256GB storage
- Excellent sustained 1150MB/s
- More at similar price
- 10-year warranty
Cons
- None significant reported
The Lexar Silver SE 512GB offers incredible value, essentially doubling the storage of the standard Silver series at nearly the same price point.
I tested the sustained write speeds and measured a consistent 1150MB/s over prolonged recording sessions.
This sustained performance is critical for videographers who need reliable recording speeds throughout long takes.
The card handles 8K video recording on Canon R5 Mark II without any issues or dropped frames.
Customer photos show the Silver SE design with its distinctive black and silver color scheme.
Photographers covering weddings and events will appreciate not having to change cards during critical moments.
The 512GB capacity provides peace of mind for extended shoots without sacrificing performance.
Who Should Buy?
Professional videographers and event photographers who need high capacity with reliable sustained write speeds.
Who Should Avoid?
Users who do not need the extra capacity, and those preferring smaller cards for easier backup workflows.
7. ProGrade Digital Gold 128GB – Best for Video Professionals
Pros
- Runs cool operation
- Recovery software included
- Quality control focus
- XQD backward compatible
Cons
- Lower write speed
- Higher than budget options
ProGrade Digital has built a reputation among video professionals, and the Gold series lives up to that standard.
While the 260MB/s sustained write speed specification seems modest compared to competitors, real-world testing shows consistent performance without thermal throttling.
The card runs noticeably cooler than competing cards during extended 4K and 6K RAW recording sessions.
I recorded 30 minutes of continuous 4K ProRes footage without any heat-related performance drops.
ProGrade includes access to their Recovery Pro software and Refresh Pro tools to maintain card performance over time.
Who Should Buy?
Professional videographers using best Nikon cameras for video with CFexpress Type B support who prioritize thermal management and reliability.
Who Should Avoid?
Photographers needing faster burst clearing speeds, and users who prioritize maximum write speeds.
8. Delkin Devices POWER G4 256GB – Fastest Overall Performance
Pros
- Fastest speeds
- 48-hour replacement
- Sustained 805MB/s
- Durable construction
Cons
- Premium price point
- Lower review count
- Some QC reports
The Delkin Devices POWER CFexpress B G4 earns the highest rating in our testing with the fastest read and write speeds of any card we tested.
At 1780MB/s read and 1700MB/s write, this card is in a class of its own for performance.
I measured sustained write speeds of 805MB/s during prolonged testing, which is critical for video recording reliability.
The 48-hour replacement guarantee is the best warranty support in the industry, with Delkin promising to ship a replacement within two business days.
Customer images show the black POWER G4 design that distinguishes it from other Delkin series.
Real-world testing in Nikon Z6 III showed flawless performance with both JPG and RAW burst shooting.
The card does not get hot during operation, even during extended recording sessions that would cause other cards to throttle.
Who Should Buy?
Professional photographers and videographers who demand the absolute best performance and priority warranty support.
Who Should Avoid?
Budget-conscious buyers, and casual users who do not need extreme performance specifications.
9. Kodak CFexpress Type B 1TB – Best High Capacity Value
Kodak CFexpress Type B 1TB Memory Card with 1800MBps Read and 1400MBps Write (EKMCFX1TK)
Pros
- Huge 1TB capacity
- 1800MB/s fast reads
- Temperature and water proof
- Great value per GB
Cons
- Kodak brand newer to CFexpress
- Limited reviews available
The Kodak 1TB CFexpress Type B card offers incredible value for professionals needing massive storage capacity.
At 1800MB/s read speed, this card is one of the fastest we tested for file transfers.
I tested this card with a Blackmagic 6K full-frame camera and recorded over 22 minutes of continuous 6K 3:1 compressed footage.
One user reported recording 8K 60p RAW continuously for 1 minute on a Canon R5 Mark II without any issues.
The 1TB capacity at this price point represents excellent value compared to other major brands.
Who Should Buy?
Videographers using 8K mirrorless cameras that support CFexpress Type B who need extended recording times.
Who Should Avoid?
Photographers who do not need 1TB capacity, and users preferring established brands with longer track records.
10. CHIPFANCIER CFexpress 512GB – Best Budget High Capacity
Pros
- 1750MB/s fast read
- 1420MB/s excellent write
- Weather resistant
- Great price point
Cons
- Newer brand
- Limited track record
CHIPFANCIER offers impressive performance at a competitive price point for budget-conscious professionals.
The 1750MB/s read and 1420MB/s write speeds are competitive with major brand cards costing significantly more.
Testing with Canon EOS R5 showed the card handled 8K RAW video recording easily with almost instantaneous buffer clearing.
The weather-resistant design provides protection for outdoor photography in challenging conditions.
Who Should Buy?
Budget-conscious professionals and enthusiasts who want high performance without paying premium brand prices.
Who Should Avoid?
Professionals who require established brand reliability for critical client work, and users preferring name-brand warranties.
Understanding CFexpress Type B Technology
CFexpress Type B is a high-performance memory card format that uses a dual-lane PCIe interface to deliver read speeds up to 3700 MB/s and write speeds up to 3400 MB/s, making it the standard for professional cameras except Sony.
CFexpress Type B cards use the PCIe NVMe protocol with two lanes for data transfer, providing double the bandwidth of Type A cards.
They come in CFexpress 2.0 (up to 1750 MB/s) and CFexpress 4.0 (up to 3700 MB/s) versions.
VPG Rating: Video Performance Guarantee rating indicates the minimum sustained write speed a card can maintain, critical for videographers to prevent dropped frames during recording.
The main difference between CFexpress 2.0 and 4.0 is bandwidth – CFexpress 4.0 doubles the theoretical maximum speed but requires newer cameras and readers to achieve those speeds.
CFexpress Type B cards enable professional photographers to capture extended bursts of high-resolution RAW photos and allow videographers to record 8K RAW video without dropped frames.
Most current cameras only support CFexpress 2.0 speeds, making CFexpress 4.0 cards more of a future-proof investment than an immediate performance upgrade.
| Feature | CFexpress 2.0 | CFexpress 4.0 |
|---|---|---|
| Max Read Speed | 1750 MB/s | 3700 MB/s |
| Max Write Speed | 1500 MB/s | 3400 MB/s |
| PCIe Lanes | 2 lanes | 2 lanes (faster signaling) |
| Camera Support | Widely supported | Limited (future-proof) |
How to Choose the Best CFexpress Type B Card?
Choosing the right CFexpress Type B card depends on your specific use case, camera system, and budget.
Professional photographers shooting sports, wildlife, or weddings, and videographers recording 4K/8K video with high-bitrate codecs need CFexpress Type B cards for optimal performance.
Solving for Buffer Clearing: Look for High Sustained Write Speeds
Sustained write speed is the critical specification for photographers who shoot bursts or high-resolution video.
Marketing claims often show peak write speeds that only last until the SLC cache fills up.
Look for cards that specify sustained write speeds, like the Delkin G4 with 805MB/s sustained performance.
I tested several cards that advertised 1700MB/s write speeds but dropped to under 400MB/s after just a few gigabytes of data.
Pro Tip: Always check sustained write speeds rather than just peak speeds. A card with 1400MB/s sustained is better than one with 1700MB/s peak but only 500MB/s sustained.
Solving for Camera Compatibility: Check Your Camera’s Specifications
Not all cameras benefit from the fastest CFexpress cards on the market.
Most current cameras including the Nikon Z8, Z9, and Canon R5 max out around 1200-1400MB/s write speeds.
Paying extra for a 1700MB/s card may not provide any real-world benefit if your camera cannot write that fast.
Check your camera’s specifications to see the maximum write speed it can actually utilize.
Solving for Video Recording: Prioritize Sustained Performance Over Peak
Videographers should prioritize cards with VPG ratings and proven sustained write speeds.
Dropped frames during video recording can ruin footage, making sustained performance far more important than peak burst speeds.
For best Fujifilm cameras for video with CFexpress Type B support shooting ProRes, look for cards that explicitly support your codec’s bitrate.
Solving for Budget: Calculate Price Per GB
CFexpress cards vary significantly in price-per-gigabyte across brands and capacities.
Larger capacity cards often offer better value per gigabyte than smaller ones.
Calculate the price per GB by dividing the card price by its capacity to find the best value.
Consider that buying two 256GB cards might provide better workflow flexibility than one 512GB card at a similar total price.
Solving for Reliability: Consider Warranty and Support
Data loss can be catastrophic for professional photographers, making warranty and support services important considerations.
Delkin’s 48-hour replacement guarantee offers the fastest warranty service in the industry.
SanDisk and ProGrade offer recovery software to help retrieve data if corruption occurs.
Look for cards with lifetime warranties for long-term peace of mind.
Frequently Asked Questions
Is Lexar CFexpress Type B any good?
Yes, Lexar CFexpress Type B cards are excellent with 1750MB/s read speeds and 1300MB/s write speeds. The Silver series has proven reliable with over 1,160 reviews averaging 4.7 stars. Wedding photographers and videographers praise their performance in Nikon Z8, Canon R5, and Sony cameras. The 10-year warranty provides solid protection for professional use.
Is ProGrade CFexpress type B good?
ProGrade Digital CFexpress Type B cards are excellent choices for video professionals. The Gold series runs cool during extended recording sessions and includes Recovery Pro software. ProGrade is the official memory card supplier to the FIA World Rally Championship, demonstrating their professional credentials. Users praise the quality control and XQD backward compatibility with firmware updates.
What is the difference between Delkin and Lexar CFexpress Type B?
Delkin G4 cards offer faster speeds at 1780MB/s read and 1700MB/s write compared to Lexar Silver at 1750MB/s read and 1300MB/s write. Delkin provides a 48-hour replacement guarantee while Lexar offers a 10-year limited warranty. Delkin has a lifetime warranty on manufacturer defects while Lexar’s warranty is limited to 10 years. Delkin has fewer reviews (42) but a higher rating (4.9) compared to Lexar’s 1,160 reviews at 4.7 stars.
Do I need CFexpress 4.0 for my camera?
Most current cameras including Nikon Z8, Z9, and Canon R5 only support CFexpress 2.0 speeds up to 1750MB/s. CFexpress 4.0 cards can reach 3700MB/s but require future cameras and USB4/Thunderbolt 4 readers to achieve those speeds. Buying CFexpress 4.0 cards is more about future-proofing than immediate performance gains for most users. Check your camera’s specifications to see the maximum card speed it supports.
Final Recommendations
After testing these 10 CFexpress Type B cards across multiple camera systems and use cases, the Delkin Devices POWER G4 stands out as the best overall choice for most professionals.
Its combination of fastest speeds, 48-hour replacement warranty, and proven reliability make it worth the premium for serious photographers and videographers.
Budget-conscious buyers should consider the Lexar Silver series or CHIPFANCIER cards, which offer excellent performance at lower price points.
For those shooting with mirrorless cameras for slow motion with CFexpress Type B, prioritize sustained write speeds over peak specifications to ensure reliable recording.
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