The Best CFexpress Memory Cards in 2022

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Best CFexpress Type B Memory Cards

CFexpress has lastly come into its personal and a number of firms at the moment are producing all kinds of capacities at a variety of costs. However with so many selections, which one do you have to purchase?


Up to date on 7/1/2022 by Jaron Schneider: We’ve up to date and refined our methodology and added 5 extra reminiscence playing cards to our testing outcomes.


CFexpress Sort B is, proper now, the most typical “subsequent technology” reminiscence card format and has all however completely received out over the SD Affiliation’s flawed SD Specific format regardless of its lofty guarantees. Whereas CFexpress Sort A can be coming into its personal, solely Sony is utilizing the format in its mirrorless cameras and on the time of publication, solely three firms are producing that card format.

When extra can be found, this information will develop to incorporate CFexpress Sort A as effectively however, for now, the 2 choices from ProGrade Digital and Sony carry out mainly identically. PetaPixel has not obtained Delkin’s possibility to check.

Each different digicam firm moreover Sony that has up to date to the most recent and best reminiscence card format is utilizing Sort B, and as such there are much more choices within the market.

However all that efficiency comes at a literal price: CFexpress Sort B playing cards can get fairly costly. To save lots of you the wallet-ache of constructing a foul determination, we’ve created a rigorous multi-stage take a look at to place CFexpress playing cards by way of the wringer and assist you to make the very best shopping for selections.

Beneath is a listing of all of the CFexpress Sort B playing cards included in our testing:

PetaPixel will replace these outcomes periodically as we receive extra playing cards, so make certain to bookmark this story and verify again whenever you’re able to make a purchase order.

The Checks

To judge which playing cards carried out greatest, we subjected every to a collection of checks. Within the case the place a card producer additionally provides a card reader, we used paired these merchandise collectively. If an organization didn’t present PetaPixel with a reader, checks had been carried out on the ProGrade Digital CFexpress Sort B and SD UHS-II twin card reader.

First, we examined the playing cards with Blackmagic Pace Check to get numbers for the typical peak learn and write speeds that may be anticipated when loading and unloading knowledge to a pc. We then crammed the playing cards at greater than three-quarters of every of their capacities and examined the velocity once more to ensure that including knowledge to the playing cards doesn’t have an effect on efficiency. These checks present us with a baseline degree of efficiency to anticipate.

The second take a look at goes past peak speeds and appears at sustained speeds, that are rather a lot tougher for reminiscence card producers to hit persistently excessive numbers. These checks are carried out with HD Tune, one of some industry-standard benchmarks for measuring reminiscence efficiency, and are proven as a mean of learn and write velocity efficiency, known as switch velocity.

Within the third take a look at, we put all of the playing cards in a Canon EOS R5 and requested it to file at 8K RAW for so long as it may. The R5 will overheat after about 20 minutes of recording at this decision, so if the cardboard is ready to constantly log that knowledge for that entire time with out dropping seen frames, we logged it as a “PASS.” Mainly, if the cardboard is ready to file for so long as the digicam is ready to ship it knowledge, it might be unlikely {that a} photographer or videographer would discover any situation with the playing cards within the subject.

The ultimate take a look at is essentially the most related for photographers. We examined what number of seconds we may fireplace a Canon R5 at most framerate and backbone earlier than we hit the boundaries of the buffer. We requested the digicam to file each RAW and the best high quality JPEG to load it with essentially the most quantity of information. This take a look at was carried out 3 times and the outcomes had been averaged.

The Outcomes

Disk Pace Checks

CFexpress Peak read and write speeds

On this take a look at, increased is healthier. High performers right here go to Sony and Exascend primarily based on each the peaks of each learn and write efficiency, though there have been a number of playing cards that carried out rather well. Acer, OWC’s Atlas Professional, and Prograde’s Gold collection playing cards carried out the worst right here, however with speeds which can be in no way “unhealthy.”

Sustained Disk Pace Checks

Cfexpress sustained transfer speeds

On this take a look at, increased is healthier and 4 manufacturers stood out: SanDisk Excessive Professional, ProGrade Digital Cobalt, Sony TOUGH, Exascend Nitro, and Delkin Black Sequence. ProGrade’s Cobalt card examined the best sustained velocity, with Sony’s TOUGH card shut behind. Acer scored the worst right here because the divide between its greatest and worst switch speeds in the course of the benchmark was very broad.

EOS R5 8K RAW Video Document Check Outcomes:

We’ve not but examined a CFexpress Sort B card that’s unable to maintain up with the Canon R5’s 8K RAW recording necessities. In all instances, the R5 overheated earlier than a reminiscence card failed.

Burst Photograph Check

CFexpress burst photo performance

On this take a look at, increased is healthier. A number of playing cards had been all inside a margin of error, although Delkin eeked out the general win with a mean of 19.43 seconds of steady capturing earlier than we crammed the buffer. ProGrade was sizzling on its heels with 19.4 seconds.

Insights, Takeaways, and Suggestions

This is perhaps a superb time to say why the speeds we noticed in testing are nowhere close to the speeds any of the businesses placed on the packaging. Nearly each CFexpress card guarantees learn speeds at or above 1,700 MB/s, however the very best we noticed didn’t even get to 900 MB/s peak speeds and sustained speeds had been a lot decrease.

It is because these peak speeds had been probably obtained in laboratory environments with the SSD bus plugged straight into a number PC. Whereas this can give absolutely the most efficiency the silicon is ready to produce, it’s additionally not something near a real-world scenario. Our checks intention to provide you a greater concept of what to really anticipate.

Prograde digital memory card and reader

Video Efficiency

Let’s get to the excellent news: each card we examined labored to our satisfaction in terms of recording high-resolution video knowledge. Each card, whatever the speeds promised, was capable of ingest 8K RAW video footage till the digicam overheated, which suggests it’s extremely unlikely that anybody would run into any points with the playing cards when capturing within the subject — the digicam will fail earlier than the cardboard does.

Even when a card doesn’t even come near the promised peak learn or write speeds seen on the facet of the field (which none of them did, by the best way), it doesn’t matter. For video, Acer, which promised the least in terms of learn and write speeds, carried out identically to Angelbird which promised essentially the most.

A majority of the playing cards we examined had been capable of maintain greater than 400 MB/s switch speeds, with solely ProGrade Digital’s Gold collection and Acer falling under that threshold. The one card we examined that has the Compact Flash Affiliation’s VPG400 certification — which requires 400 MB/s sustained speeds — was Exascend’s Nitro playing cards, though regardless of this they aren’t those holding the best sustained switch speeds: that goes to Prograde’s Cobalt line and Sony’s TOUGH playing cards. So whereas AngelBird guarantees some severely excessive sustained speeds on its web site and in advertising supplies, we weren’t capable of replicate them utilizing industry-standard software program.

Angelbird Memory card and reader

That mentioned, there could also be a purpose for that. Angelbird is extraordinarily nitpicky about which playing cards are designed for which cameras which may imply that it does have some form of particular tuning to work with cameras higher than with pc software program. This looks like a stretch, however we’ve no technique to inform.

For essentially the most half, these playing cards had been all fairly constant of their efficiency throughout our benchmarking except Acer and Atlas Professional, each of which had been much more frenetic in how a lot they jumped from excessive speeds to low speeds throughout testing, which supplies us pause recommending both for video workflows.

Photograph Efficiency

Some manufacturers separated themselves from the pack within the photography part, nevertheless, and there are clear winners and losers in terms of lengthy intervals of burst photograph efficiency.

Delkin Devices CFexpress Card in reader

Virtually each card we examined would be capable of deal with what we think about “regular” burst photograph capturing. It is rather uncommon for a photographer to wish to fireside constantly for 20 seconds and extra more likely to fireplace in bursts of 5 to seven seconds with a number of seconds of inactivity in between. As such, the one card we’d advocate patrons draw back from is ProGrade’s Gold collection, which received’t be capable of maintain as much as what we think about sensible burst photograph necessities.

The Greatest Choices

All which means of the playing cards we examined, we advocate going with Sony’s TOUGH, Exascend’s Nitro, SanDisk’s Excessive Professional, Angelbird’s AV PRO, ProGrade Digital’s Cobalt collection, or Delkin’s Black Sequence. These playing cards posted wonderful efficiency in each video and photograph testing in addition to our computer-based benchmarking. You’ll be secure to select up any of those, so store for what’s on sale.

I’ll say that whereas the Exascend Nitro reminiscence card carried out very effectively, we don’t advocate the corporate’s 20Gbps card reader. Whereas it doesn’t appear to have any bearing on efficiency, the reader itself has lively cooling that creates a whopping 65 decibels of noise. If any card is plugged into the reader, it screeches at a excessive pitch that’s extremely annoying. No different reader we examined does this, and it didn’t carry out any higher than our ProGrade Digital normal testing reader in trade for all that racket.

Of all of the accessible playing cards, if capability is your greatest concern, Angelbird might be the very best wager because it at the moment is the one model to supply a whopping 4TB in a single card. However if you happen to drive our hand and make us declare one total winner…

The Greatest CFexpress Sort B Card in 2022

In case you are trying to purchase the very best card with essentially the most dependable efficiency, then we advocate the Sony TOUGH card. Whereas the cardboard doesn’t submit the best marks in all classes, it introduced essentially the most constant learn and write peaks and a number of the greatest sustained efficiency amongst all of the playing cards.

Sony TOUGH

PetaPixel’s Alternative: Sony TOUGH CFexpress Sort B reminiscence card.

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