The best SD Cards of 2017: comparison, benchmark, fastest, top 10

Which is the best SD card of 2017? And the fastest? Which is the most reliable? Which is more suited to the latest generation reflex or a full frame and which is the cheapest? Which is the best SD card for the 2017 SLR cameras or fullhd or ultra hd 4k camcorders, according to various needs? Wich has the longest warranty? We try to make a clear list of the best SD cards by comparing performance and evaluating them considering the price and performances. We start from the graphic performance in reading and writing speed.

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techfunology.com chart


This above is a graphical comparison of performance (or benchmark) of some SD cards run with CrystalDiskMark 3.0 * in sequential read and write. When we’re buying a new SD cards,we must consider the price and the writing speed , as it is important that the card is as fast as possible in writing the data of the pictures or videos we are recording from the device in order not to fill the buffer causing loss of data or slowing the sequential burst.
Please note that all SD cards in this article are Class 10 and UHS-I (the parameters that are used to classify the speed of SD cards, as we can see in the table below ).

What is 'Class' and what UHS-I U1 or U3 means

What class 10 and UHS-I U1 or U3 mean

Let’s take a look into Speed Classes and UHS-I class

  • Class 10 indicates that the card provides write speed of at least 10MB/s.
  • UHS-I U1 indicates that the card is fast enough to shoot Full HD 1080p. (> 10 MB/s constant write)
  • UHS-I U3 means that the card can support shooting 4K Ultra HD videos with UHS-I enabled devices (> 30 MB/s constant write)

Let’s sort ideally SD cards into:
PRO (cards with read speed from 60 to 90MB/s or 600x speed)
PLUS (cards with read speed up to 45MB/s or 300x speed)
STANDARD (cards with read speed up to 30MB/s or 200x speed)

Which SD card to choose??

  • PRO: for high-end dslr reflex, full frame cameras, for those who make sports photography, or generally those who use continuous shooting, timelapse . To shoot videos in FullHD resolution or higher , such as 2K or 4K UltraHD (if the card is classified UHS-I U3).
  • PLUS: Adequate for the majority of non-professional purposes, such as reflex, fullframe,  landscapes photography, portraits, street and every single-shot use. Movies up to FullHD (with UHS-I devices).
  • STANDARD: sufficient for APS-C (not fullframe), compact cameras, movies at resolutions lower than FullHD.

So let’s see a list of the best sd cards of 2014 and 2015:

PRO SD cards (90MB/s or superior)
SanDisk Extreme PRO 32Gb UHS-II U3 280MBb/s

– Price: 69$ on Amazon.com 52£ amazon UK | 78€ on Amazon IT
– Reported read / write speed: 280MB/s – 250MB/s
– Measured* read / write speed: n.a. – n.a.
– Class: 10, UHS-II U3
– Supports 4K Ultra HD recording as it is UHS-II U3 class.

This SD card is suitable for those seeking the best without compromise, there is no faster and more performing card at the moment, and of course you do pay it. Suitable for those who make use of many continuous shots and needs extreme speed not to lose a single frame (sport photography, hunting, safary, those who make use of high resolution video at FullHD and who should record video in 4K Ultra HD as it is in class UHS-II U3. Card for professional and very demanding photographers. Sandisk stands for speed and reliability. Also these cards are water resistant, vibration, X-rays present in airports proof. The card is ultra fast, read and write speed is very fast, reaching 250MB/s that allows any type of operation with cameras and video cameras that currently exist, including 4k. It is ‘wasted’ if the device in which it will be used doesn’t support UHS-II, it will work the same but not at full speed. Suitable for Nikon D800 in continuous shooting, Fuji XT 1, cameras that record in 4K as the Panasonic Lumix GH4.

Where: Amazon US | Amazon UK | Amazon CAN | Amazon IT


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Lexar Professional 1000x UHS-II U3 32Gb
Lexar_UHS-II_1000x
*Measured with UHS-I reader

– Price: 27$ in US | 19£ in UK | 27€ in Germany
– Reported read / write speed: 150MB/s – ?MB/s
– Measured* read / write speed: 82MB/s – 75MB/s
– Class: 10, UHS-II U3
Supports 4K ultra HD recording
– Warranty: lifetime limited
– Recover files with Image Rescue software
Backwards compatible with UHS-I devices

This brand new SD card (February 2015) is one of the first to be in class UHS-2 U3 and reaches 150MB/s read when used with UHS-II devices.
We have made measurements with a UHS-I card reader detecting 82MB/s read and 75MB/s write. With a UHS-II device you can easily reach the stated specifications. This fast SD card is suitable for demanding photographers, those who make use of continuous shots mainly using Fullframe Reflex or to record higher resolution videos such as 4K Ultra HD or 2K videos.
Recommended with Fullframe SLR cameras, like Nikon D800,e Canon 6D and 5D (but does not support UHS-II), Nikon D610, D750 and D800, Panasonic GH4, Fuji XT1 and all APS-C.
Works very fast in UHS-II devices, such as Panasonic and Fuji GH4 XT1, but the card can be used on any SLR camera or even UHS-I of course the speed will be reduced in proportion to the capacity of the device used. Even when used with cameras UHS-I this card is one of the fastest in its class, and it is one of the cheapest.

These high-speed cards leverage UHS-II technology (UHS Speed Class 3 (U3)) and provide a read transfer speed up to 1000x (150MB/s) when used with an SD UHS-II reader. For versatility, the cards also work with UHS-I devices at UHS-I speeds, and they’re backwards compatible with older cameras and readers, performing at Class 10 speeds when used with non-UHS devices.

Professional 1000x SDHC/SDXC UHS-II cards include the latest version of Image Rescue software. Image Rescue recovers most photo and select video files, even if they’ve been erased or the card has been corrupted. The software is available for free download with purchase of the card. Using a DSLR, HD camcorder, or 3D camera, you’ll be able to leverage the latest photo and video features available for shooting high-quality images and stunning 1080p full-HD, 3D, and 4K video.
The price is really good, 27$ for a card better performing than direct competitors, which in some cases are more expensive. Absolutely recommended.

Where: Amazon US | Amazon UK | Amazon CAN | Amazon IT | Amazon DE | Amazon ES | Amazon FR

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SanDisk Extreme PRO UHS-I U3 32Gb 95MB/s

Sandisk_Extreme_Pro_Benchmark– Price: 26€ in USA | 23£ in UK | 27€ in Germany
– Reported read / write speed: 95MB/s – 90MB/s
– Measured* read / write speed: 95.02MB/s – 84.48MB/s
– Class: 10, UHS-I U1-U3
Supports 4K ultra HD recording
Warranty: lifetime limited

SD card suitable for demanding photographers, for those who make use of continuous shots and need extreme speed, and can’t lose a single frame, those who make use of high resolution videos in FullHD and videos in 4K Ultra HD resolution, since the card is UHS-I U3 class. The card is very fast in reading – 95MB/s – allowing file transfers to PC very fast, and has a fast writing speed, reaching 84,5MB/s that allow any type of operation with any cameras and camcorders, including Ultra HD 4K cameras. Exellent if used with SLR cameras, fullframe cameras, like the Nikon D800 that records files of over 50MB size. Excellent for Canon 6D, 5D (but does not support UHS-I), Nikon D610 and D800, Panasonic GH4, Fuji XT1 and all full frame reflex and APS-C.
Also Sandisk guarantees this article for life . Sandisk stands for speed and reliability. Also this card is waterproof, vibration and X-rays proof.

Where: Amazon US | Amazon UK | Amazon CAN | Amazon IT | Amazon DE | Amazon ES | Amazon FR

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Transcend TS32GSDU3X Scheda SDHC UHS-I U3, 32GB

– Price: 27$ in USA | 20£ in UK | 29€ in Italy
– Reported read / write speed: 95MB/s – 85MB/s
– Measured* read / write speed: n.a. – n.a.
– Class: 10, UHS-I U3
Supports 4K ultra HD

Another card in U3 UHS-I class, this means, as we have seen, that you can use it to record video in 4K UltraHD . Also suitable for those who make use of continuous shots and needs extreme speed (sport, hunting, birdwatching, safary), those who make use of FullHD video at 60fps. Suitable for Nikon D810 also in continuous shooting, Fuji XT 1, cameras that record in 4K as the Panasonic Lumix GH4 and of course any kind of Reflex, fullframe (like canon 6D or 5D and D610 and D800) or APS-C cameras, UltraHD 4K, 2K, or FullHD 3D.

Where: Amazon US | Amazon UK | Amazon CAN | Amazon IT

Kingston SDA3/32 GB UHS-I U3

– Price: 23$ in USA | 15£ in UK | 25€ in Italy
– Reported read / write speed: 90MB/s – 80MB/s
– Measured* read / write speed: n.d. – n.d.
– Class: 10, UHS-I U3
Supports 4K ultra HD
– Lifetime warranty

Another SD card class U3, which certifies the ability to record video in 4K UltraHD. This card is also suitable for making continuous shots and for those who need a good writing speed, to avoid the risk of missing some frame frame filling the buffer of the camera. Recommended for DSLR or mirrorless cameras, aps-c or fullframe, for those who record FullHD videos even at 60p. The card is very fast, read speed is 90MB/s, allowing file tranfers from the card to the PC very rapidly, and write speed is fast too, reaching 80MB/s allowing any type of operation with cameras and video cameras currently existing, including 2K and 4K. It is good for SLR cameras, fullframe cameras, like the Nikon D610, Canon 6D, GH4 Panasonic, Fuji XT1 and all APS-C.
The warranty is for life with free technical support service.

Where: Amazon US | Amazon UK | Amazon CAN | Amazon IT

Samsung SD PRO+ 32Gb MB-SG32D/EU

– Price: 20$ in USA | 24£ in UK | 36-44€ in Italy
– Reported read / write speed: 90MB/s – 80MB/s
– Measured* read / write speed: 87.4MB/s – 76.8MB/s
– Class: 10, UHS-I U1

This card is a brand new concept, having been released in April 2014, it uses the MLC NAND-type unlike other cards using TLC, with advantages in performance and durability. Slightly faster than the SandiskPro in writing, and slower in reading. Theoretically, with 75MB/s write speed, it can be used to record 4K Ultra HD videos, but the card is classified UHS-I U1 , which certifies it as fast enough for in Full HD 1080p videos, and not U3. Great for SLR cameras, fullframe, as the Nikon D800 or Canon 6D.
The coating ensures water, shock and vibration, X-ray resistance. This is a upper class SDHC, suitable for demanding photographers and professionals, with a price 15% lower than the Sandisk but similar or superior performance. The price has recently dropped a lot.

Where: Amazon US | Amazon UK | Amazon CAN | Amazon IT

SanDisk Extreme PLUS 32Gb, Classe U3 UHS-I 80MB/s

– Price: 24$ in US | 24£ in UK | 39-42€ in Italy
– Reported read / write speed: 80MB/s – 60MB/s
– Measured* read / write speed: 82.7MB/s – 60.8MB/s
– Class: 10, UHS-1 U3
Supports 4K ultra HD
– Warranty: lifetime limited

This is a brand new card, on sale from October 2014, which replaces the old Sandisk Extreme, but with better performance. This SD card is UHS-I U3 class and is therefore also suitable for those who record high resolution videos such as 4K Ultra HD or fullhd 60p.
This card is very fast, reaching 83MB/s read and 61MB/s write, that allow any type of operation with cameras and video cameras now on sale, including 4k cameras. This card is suitable for SLR cameras, fullframe, like the Nikon D610 or Canon 6D, even in continuous shooting up to 10-15 pictures and maybe more depending on the camera. Excellent for Reflex, APS-C and high resolution videocameras. Performs slightly below the Extreme PRO but has a lower price.
Sandisk cards are synonymous with speed and reliability. They are also resistant to water, vibrations, to X-rays present in airports. Also Sandisk guarantees this item to life.

Where: Amazon US | Amazon UK | Amazon CAN | Amazon IT

Lexar Professional 600x 32GB

– Price: 27$ in US | 23£ in UK | 48-52€ in Italy
– Reported read / write speed: 90MB/s – 45MB/s
– Measured* read / write speed: 87.4MB/s – 45.8MB/s
– Class: 10, UHS-I U1

This SD card is placed in between the PRO and PLUS cards. The read speed is indeed comparable to the first two PRO, but the writing speed is slower: 45MB/s. The advantage over competitors is that the Lexar reaches up to 256GB capacity, while the others stop at 128GB. In addition, the brand is known for its reliability.

Where: Amazon US | Amazon UK | Amazon CAN | Amazon.it

Sony SF 32UX SDHC UHS-I 32768 MB
Sony_SD_Card

– Price: 28$ in US | 25£ in UK | 36-39€ su Amazon.it
– Reported read / write speed: 94MB/s – 45MB/s
– Measured* read / write speed: 92.4MB/s – 44.8MB/s
– Class: 10, UHS-I U3 (UK) or U1 (US and IT)
– Warranty: 5 years

This card also stands over 90MB/s reading, but the write speed is no more than 45MB/s . The price is fair, but with a few euro more you get a card that reches 80MB/s (sandisk extreme pro, samsung pro, Kingston and Transcend). This card is great for those who have to make a photographic use of APS-C or fullframe cameras, in single-shot or continuous shooting of up to 5-6 shots. It’s okay for making videos in Full HD at 60fps too. The UK version is U3, so it’s easy to assume that it supports video recording in 4K. The quality of course is very good since it is a Sony product.

Where: Amazon US | Amazon UK | Amazon CAN | Amazon IT

Transcend TS32GSDHC10U1 SDHC, Class 10 UHS-I (Ultimate) 600x

– Price: 16$ in US | 13£ in UK | 25-27€ in Italy
– Reported read / write speed: 85MB/s – 45MB/s
– Measured* read / write speed: n.d. – n.d.
– Class: 10, UHS-I U1
– Amazon’s users rating: 4.8/5

This SD card is on market since 2012, so it’s a little outdated but performing and especially at a great price. It was recently replaced by Transcend U3 card, but if you do not have to shoot Ultra HD 4K videos, this card is great for any other use, from photos with SLR also fullframe, continous bursts of up to 5-8 photos, shooting videos in FullHD 60p. On the official website it says that this card also supports the recording of 4K video, and considering the performance is also possible, although it is certified class U1 and not U3. A very good deal considering that the price crashed to 16$ € after the release of the new Transcend class U3.

Where:  Amazon US | Amazon UK | Amazon CAN | Amazon IT

SanDisk Extreme SDHC 32 GB, Classe U3 UHS-I 60MB/s

– Price: 20$ in USA | 15£ in UK | 29-32€ in Italy
– Reported read / write speed: 60MB/s – 40MB/s
– Measured* read / write speed: 56.7MB/s – 38.8MB/s
– Class: 10, UHS-I U3
Can register 4K ultra HD videos

This is a brand new SD card, on the market since August 2014 has characteristics in between the PRO and PLUS but belongs to the U3 UHS-I class . This means that you can use it to record video in 4K UltraHD . It is not as fast as the PROs, having a read speed of 60MB/s and write speed of 40mb/s, but it can guarantee a continuous and constant flow near its maximum speed so it is class U3 certified.
Therefore it is suitable to shoot video in 4K, in FullHD at 60fps (or lower), on Reflex also fullframe (except the D800 that records huge file of over 50MB), and cameras of all kinds. His strength is definitely the price of just over 25$/£ .

Where: Amazon USA | Amazon UK | Amazon CAN | Amazon IT

PLUS SD Cards (up to 45MB/s)
Sandisk Extreme 32GB SDSDX-032G-X46 45MBb/s

Prova con CrystalDiskMark 3 SD Sandisk Extreme 32GB– Price: 23$ in USA | 16£ in UK | 22-25€ in Italy
– Reported read / write speed: 45MB/s – 45MB/s
– Measured* read / write speed: 43.4MB/s – 40.8MB/s
– Class: 10, UHS-I U1Card with excellent performance, almost 45MB/s in both reading and writing, which place it among the top-end cards in the PLUS category, exceeding in writing some of PRO cards. Perfectly suited to any use, from Reflex, fullframe, videos in FullHD quality and 2k. Not recommended to those who make a lot of pictures in continuous shooting in RAW using fullframe cameras and who makes videos in 4K (although it might work as well).

Where: Amazon USA | Amazon UK | Amazon CAN | Amazon IT

We are giving away TWO Firefly 7S (worth 71$ x2) completely for free to TWO of our readers.
Join the contest before 2016, November 28th clicking here.

Samsung EVO 32Gb

– Price: 10$ in USA | 10£ in UK | 18-22€ in Italy
– Reported read / write speed: 48MB/s – ?
– Measured* read / write speed: 44.6MB/s – 19.89MB/s
– Class: 10, UHS-I U1

This sd card is bestseller on Amazon US, UK and Italy. Samsung has released the EVO line in April 2014, this SD card has excellent performance in reading (45 MB/s), writing speed reaches 20MB/s. The price fell down a lot from the first days on sale ($ 35, now is $ 10), making it a very competitive sd card, it can be used for DSLR cameras, also fullframe, for single shots, camcorders, smartphones, tablets, or videos up to FullHD, fullHD action cams like xiaomi Yi, SJ5000+, GoPro Hero.

Where: Amazon USA | Amazon UK | Amazon CAN | Amazon Italy

Standard SD cards (up to 30MB/s)
SanDisk Ultra SDHC, 40 MB/s, Classe 10

– Price: 18$ in USA | 19£ in UK | 17-18€ in Italy
– Reported read / write speed: 40MB/s – 20MB/s
– Measured* read / write speed: 38.7MB/s – 16.4MB/s
– Class: 10, UHS-I U1

Card with a great price, and good performance but lower than all the other seen above. This card has “standard” performance, so it is not suitable for those who require pro performances, as those who make pictures in continuous shooting with DSLR (sports photography, hunting, etc.) and who shot videos at resolutions of 2K and 4K, superior to FullHD. It’s fine to take individual photos in Raw with entry level SLR cameras, and record video up to FullHD. In short, good for those who don’t want to spend a lot of money for pro cards.

Where: Amazon USA | Amazon UK | Amazon CAN | Amazon IT


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