Best Memory Card Canon 5D Mark IV

An in-camera speed comparison between all the most popular CF and SD (UHS-I and UHS-II) memory cards. See which memory cards are the best for photography and 4k video in the Canon 5D IV.

With the Canon 5D IV, you can now either use SD memory cards as your primary storage or if you need more speed you can use CF cards.

Please let me know in the comments if you found this article helpful, or how I could make it better!

 

Best Memory Cards For The Canon 5D Mark IV

The Canon 5D IV isn’t just a 5D III with a few upgrades like the MKIII was compared to the MKII. This camera, like the Canon 5D II, is a huge leap forward in the evolution of the 5D. With 4K video, dual pixel Raw which gives us stills that allow for minor focus adjustments in post, and a completely new 30MP sensor, Canon created a monster of a camera.

So for those looking to buy the best SD or CF memory cards for the Canon 5D IV, this guide should help you get started so you’re not making purchasing decisions completely blind, and how each card actually performs in-camera.

I’ve also added a new column to the chart below that shows which cards are suitable for shooting internal 4 K video.

 

Camera Specs

Sensor: Full Frame 30.4MP  /  Processor: Digic 6+

Memory Card Type: SD UHS-I / Compact Flash

Video: 4k 29.97p 500Mbps / 24p 500Mbps

4k Video Record Time: 16 minutes per 64GB card

Est. Size Of Buffer: 1GB

Canon 5D Mark IV – Amazon / Adorama / B&H

 

Canon 5Dmk4 Memory Card Speed Chart

In-camera real-world speed comparisons between the different cards.

The memory card speed tests for the Canon 5D IV have turned out fairly impressive. Not quite as fast as the Canon 7D II, but that’s understandable considering the 5D has a bit more information to process. The 5D IV also isn’t nearly as fast as the  Canon 1DX II, which uses CFast cards.

I did something with this test that I don’t do too often: I tested each card’s ability to record 4 K video. The Canon 5D IV can record video at 500 MB/s, which is a data stream of 62 MB per second. So the cards that performed at close to 60 MB/s or higher seemed to support 4 K video recording. Anything lower and you would get a buffer bar that would eventually stop your recording.

You can also see the Memory Card Speeds for the Canon 5Ds, Canon 7D II, and Canon 1DX II.

Compact Flash (CF Card)	USB 3.0 Read	USB 3.0 Write	4K	Canon 5D IV
Lexar 1066x	155.50 MB/s	138.40 MB/s	Yes	101.16 MB/s
KomputerBay 1066x	153.34 MB/s	135.90 MB/s	Yes	100.03 MB/s
Transcend 1000x	155.30 MB/s	132.80 MB/s	Yes	100.23 MB/s
KomputerBay 1000x	147.80 MB/s	134.90 MB/s	Yes	98.78 MB/s
Sandisk Extreme Pro	154.90 MB/s	135.20 MB/s	Yes	98.65 MB/s
Toshiba 1066x	158.00 MB/s	134.30 MB/s	Yes	96.10 MB/s
PixelFlash 1106x	154.34 MB/s	90.71 MB/s	Yes	78.09 MB/s
Kingston 600x	114.90 MB/s	101.70 MB/s	Yes	76.56 MB/s
Sandisk Extreme	118.10 MB/s	68.43 MB/s	No	58.79 MB/s
Lexar 800x	152.70 MB/s	44.72 MB/s	No	41.17 MB/s
Transcend 800x	152.30 MB/s	40.25 MB/s	No	37.05 MB/s
Transcend 400x	152.50 MB/s	39.55 MB/s	No	36.34 MB/s
KomputerBay 600x	85.77 MB/s	51.16 MB/s	No	29.19 MB/s
KomputerBay 800x	86.42 MB/s	50.83 MB/s	No	29.10 MB/s
SD Memory Cards	USB 3.0 Read	USB 3.0 Write		Canon 5D IV
UHS-II
Toshiba 64GB	238.5 MB/s	199.7 MB/s	Yes	72.67 MB/s
Lexar 2000x 64GB	280.9 MB/s	181.4 MB/s	Yes	70.52 MB/s
Delkin V90 64GB	245.1 MB/s	164.6 MB/s	Maybe	70.02 MB/s
Sony M 64GB	253.2 MB/s	91.62 MB/s	Yes	68.71 MB/s
Transcend 64GB	268.9 MB/s	174.3 MB/s	Yes	67.79 MB/s
Lexar 1000x 64GB	145.0 MB/s	60.7 MB/s	No	57.44 MB/s
Sandisk Extreme Pro 64GB	257.3 MB/s	109.9 MB/s	No	39.58 MB/s
UHS-I
Sandisk Extreme Pro 64GB U3	98.6 MB/s	90.8 MB/s	Yes	73.23 MB/s
Samsung Pro+ 64GB U3	97.5 MB/s	87.3 MB/s	Yes	69.23 MB/s
Kingston 64GB U3	98.1 MB/s	90.4 MB/s	Yes	69.02 MB/s
Samsung Pro 64GB U1	96.3 MB/s	82.2 MB/s	Yes	66.89 MB/s
Samsung Pro 64GB U3	97.7 MB/s	78.6 MB/s	Yes	65.52 MB/s
Sandisk Extreme Plus 64GB U3	99.0 MB/s	64.4 MB/s	No	57.12 MB/s
PNY 64GB U1	96.5 MB/s	66.5 MB/s	No	56.21 MB/s
Transcend 64GB U3	96.7 MB/s	68.4 MB/s	No	55.54 MB/s
Lexar 633x 64GB U3	93.3 MB/s	67.3 MB/s	No	53.68 MB/s
PNY 64GB U3	96.5 MB/s	66.1 MB/s	No	52.49 MB/s
Lexar 600x 64GB U1	95.4 MB/s	64.8 MB/s	No	52.70 MB/s
Sony 64GB U3 (Old Model)	96.5 MB/s	84.5 MB/s	Yes	51.66 MB/s
Sony 64GB U3 (New Model)	96.7 MB/s	56.2 MB/s	No	51.50 MB/s
Sandisk Extreme 64GB U3	72.43 MB/s	54.1 MB/s	No	48.48 MB/s
Samsung 64GB EVO U1	47.7 MB/s	27.3 MB/s	No	23.43 MB/s

-You can see which cards work for 4k video. How I did that test was I recorded video for about a minute and a half; if no buffer indicator ever showed up, I marked it as a ‘Yes’. Some of the cards would record video for a while but would often fill the buffer after about a minute, so to be safe I marked those as ‘No’.

Unlike the Canon 5D III, the Canon 5D IV features a very fast SD memory card slot, so you should be able to take full advantage of SD memory cards and use them exclusively if you feel CF cards are overkill for your needs. You can also, of course, use the SD cards as your backup or overflow.

It also looks like the camera does not support UHS-II or CFast memory cards based on the specs, which is kind of unfortunate, but I guess it’s still okay because we can use CF cards for maximum speed and performance.

While CFast cards cannot be used, UHS-II cards will still work; you just won’t see any speed benefit in the camera.

 

Canon 5D Mark IV Memory Cards | Recommended

Before getting into the in-camera speed test where I test the performance of each card in the Canon 5D IV, I wanted to share some of my recommended cards.

 

Top 3 Fastest CF Memory Cards For The 5D IV

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When looking for the fastest CF memory card for the Canon 5D IV, the results were so close to the top 3 cards that any of these cards’ performance will feel the same in real-world use.

Lexar 1066X

Lexar makes very reliable compact flash memory cards. They’ve been around for a long time and are a champion in the industry. I always recommend Lexar cards.

In-camera speed: 101.16 MB/s – Amazon

 

SanDisk Extreme Pro CF

Sandisk is usually the fastest card but the CF card performed slightly slower than the Lexar and Transcend. However, they are still one of the best cards money can buy.

In-camera speed: 98.65 MB/s – Amazon

 

Transcend 1000x CF

Transcend cards are always at the top of the list. They make all-around very solid products with a trusted brand name.

In-camera speed: 100.23 MB/s – Amazon

 

 

Top 3 Fastest SD Memory Cards | UHS-I

UHS-I cards are the best value and also perform very well. The fastest UHS-I memory card is the Sandisk, but Kingston, Samsung, and Sony all come very close.

Sandisk Extreme Pro U3 64GB

Sandisk is the cream of the crop. Their Extreme Pro cards are the best-performing memory cards on the market.

In-Camera Speed: 73.23 MB/s – Amazon

 

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Samsung Pro+ U3

Samsung makes some great memory cards, and the Samsung Pro+ U3 card is the best they have to offer. It also works great with the Canon 5D IV for photography and 4 K video.

In-Camera Speed: 69.23 MB/s – Amazon

 

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Kingston U3 64GB

Kingston doesn’t make many cards, but this card has been a top performer for years. It also works great in the Canon 5D II.

In-Camera Speed: 69.02 MB/s – Amazon

 

 

Fastest SD Memory Cards | UHS-II

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While the Canon 5D IV cannot take full advantage of the UHS-II memory cards, they still do work in-camera. They will just function as UHS-I cards.

I don’t really recommend using a UHS-II card because you won’t be getting your money’s worth.

 

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Lexar 2000x 64GB UHS-II

Based on my current tests, the Lexar 2000x is your best bet for UHS-II memory cards in the Canon 5D IV. They were among the first companies to make UHS-II cards, and they get a lot of great reviews.

In-Camera Speed: 70.52 MB/s – Amazon

Best Memory Cards For Video | Canon 5D Mark IV

The new Canon 5D IV now offers 4K at 500Mbps with the MJPEG 4:2:2 codec at a 1.7x crop.

MJPEG uses the same compression as JPEG. While the video enthusiast may be disappointed by this, Fujifilm has proven time and time again that JPEG can look great. The current problem is that MJPEG footage needs to be transcoded before going into the edit. Yuk!

Streaming 500 MB/s video puts a lot of strain on memory cards, and only the fastest ones seem to work.

 

Canon 5D IV Video Record Time Based On Card And Format

I get the question a lot, “How long can I record 4k on a 64GB card?”

If you’re looking to see how long a memory card can record video, depending on the format and the card size you’re using, here is a simple chart.

*Canon 5D IV Video record time based on minutes. This is not tested on the camera; I just use a bitrate-based formula to get these numbers.

Record Format	Frame Rate	Bitrate	16GB	32GB	64GB	128GB	256GB
4k	29.97 / 24/ 23.98	500Mb/s	4.27	8.53	12.07	34.13	68.27
1080p	59.94	180Mb/s	11.85	23.70	47.41	94.81	189.63
720p	120	160Mb/s	13.33	26.67	53.33	106.67	213.33
1080p	29.97 / 24	90Mb/s	19.26	47.41	94.81	189.63	379.26
1080p	59.94	60Mb/s	35.56	71.11	142.22	284.44	568.89
1080p	29.97	30Mb/s	71.11	142.22	284.22	568.89	1,137.78
1080p	29.97	12Mb/s	177.78	355.56	711.11	1,422.22	2,844.44

 

Getting the exFAT Format So Your Video Files Aren’t Broken Up

Unfortunately, the Canon 5D IV defaults to formatting memory cards to FAT32 unless they are 256 GB. Only 256GB memory cards are formatted exFAT. The problem is that if you’re shooting these massive 4k video files on a FAT32 memory card, the files will be split into 4GB chunks. This is pretty terrible if you are doing long recordings, since a 4 K video file is almost 4GB per minute.

The workaround is to get 256GB memory cards so you always get the exFAT format. Or, you can format your smaller cards to exFAT with an external memory card reader on your PC. Currently, that’s the only workaround, and it seems to be working fine.

However, if you format your card to exFAT on your PC and then format it later in your camera, it will default back to FAT32. – Canon, what were you thinking?

 

When Two Cards Is Better Than One

I’ve been doing these memory card tests for a few years now, and I get a lot of emails from people with horror stories about losing a memory card with their entire trip on it, or about it getting corrupted and costing $2,000 to recover the data.

This can and does happen.

This is why it’s better to own several smaller cards: if your nightmare comes true, you only lose a portion of what you were shooting, instead of everything.

If you’re a professional, it’s good practice to use that backup SD slot and, of course, immediately offload those cards to a hard drive and a backup after every shoot. But you already knew that. 🙂

 

Frequently Ask Questions

I’ve been doing these memory card speed tests for several years now, and I get a lot of the same questions, so I’ll do my best to answer them here.

 

Do I need a UHS-II Memory Card? – You do not need a UHS-II memory card, and they actually will give you no benefit over a UHS-I memory card when used in the camera. The only difference a UHS-II memory card makes in the Canon 5D Mark IV is that it allows you to transfer data to your computer more quickly with a fast UHS-II memory card reader.

 

What’s the difference between U1 and U3 SD Memory cards? – The main difference has to do with minimum write speeds. U1 SD memory cards are guaranteed to write at a minimum speed of 10 MB/s, and U3 SD memory cards can write at a minimum speed of 30 MB/s. Now, of course, there are many things that go on inside the camera that might not guarantee this, but it’s usually not the card’s fault.

 

What’s the difference between SDHC and SDXC with SD memory cards? – This has to do with the formatting of the card. SDHC cards are FAT32, and SDXC cards are exFAT. Some cameras used to be limited to certain formats, but firmware updates have gradually fixed that. Now, pretty much SDHC means any card 32GB or smaller, and SDXC means 64GB or larger.

 

My memory card is creating corrupt shots; what do I do? – Unfortunately, in this situation, you likely have a bad card. There isn’t much you can do about this other than replace your card.

 

My memory card doesn’t work what do I do? – It’s likely you could have a bad memory card, but also make sure you always format your card in the camera. This tends to reduce issues with cards not working or not performing correctly.

 

My buffer keeps getting filled when recording video. – This usually means your memory card is not fast enough, and you’ll need to get a faster card. If you already have a card on the list above, you should try a different brand. Not all cameras work the same with each card; different production cycles between cameras and cards can yield varying results, and there is no guarantee that the cards I rated will work perfectly with your camera. Lexar, Toshiba, Samsung, and Sandisk are usually pretty safe bets.

 

Best Memory Card For The Canon 5D Mark IV – Conclusions

Whether you’re looking for the fastest memory card or just a memory card that will last you a long time, the difference between 5MB/s or even maybe 10MB/s won’t make a very noticeable difference when you’re dealing with already very fast memory cards unless you’re near the 4k recording threshold. So if there is a card that performs well but has a better warranty and is at a better price, it might be a good idea to just grab that.

However, if you’re doing a lot of burst shooting for sports, nature, or even landscape photography, then it might be a good idea to go with the fastest card you can afford so you never find yourself waiting on that annoying buffer.