SanDisk SDSDXPK-128G-GN4IN Extreme PRO 128 GB up to 300MB/s UHS-II Class 10 U3 SDXC Memory Card

I purchased one of these cards prior to visiting the Royal International Air Tattoo at RAF Fairford, where I knew I would be photographing some very high-speed jets. A high ‘write’ speed is essential for this type photography if you want to get those all-important shots without the camera buffering. I’m pleased to say the card worked extremely well with my EOS 5D MkIV in high-speed continuous mode. There was a noticeable improvement in speed both whilst using the camera and also downloading the images. It’s too early to comment on the reliability of this card, or video use, (I only do still photography), but my other SanDisk cards have proved reliable.If high speed action is your thing it’s probably worth the fairly hefty price tag for the 300MB/s card, but if speed isn’t your top requirement stick to the 95MB/s card, which is perfectly adequate and considerably cheaper...

Good SD card that worked well without any issues.

This card is amazingly fast at up to 300 mb/sec although it is very expensive, but all the fast ones are, unfortunately. I used it on a Fuji XT3 and I previously had a Class 1 -70 mb/sec card in it and it complained and said "cannot write to media" but it did. It also stuttered and kept saying "storing". With all these mishaps I thought the 2 video clips I recorded would be useless but they survived although the sound disappeared on one. I should point out I was recording 4k which is pretty demanding due to the volume of information gathered and processed. This card is a Class 2 which is recommended for the XT3 and it is way better. If I buy another card for the dual slots it will be £190 on cards so I might buy a medium speed card and use it for stills although it would probably cope with 4k at a quarter of the price. One can but experiment. Nevertheless this is a super card.

Works well but can be bought more cheaply elsewhere

I use the card with my Canon R and using cRAW and JPEG full res the buffer will never run full, you can shot infinite or at least until the card is full or the camera overheads. I did not try any other combination yet, but even is the buffer runs full it clears very fast with this card. Might be the best card for Canon R, from the write/read speeds, brand depends on personal taste.Creating in camera HDR also speed up by half the time using this new card.I also had 290MB/sec write speed using a Dell Laptop (using some large files) with build in SDCard slot/reader, I never reached that speed with the TS-RDF9K, which is sad I specifically purchased / upgraded the previous 8 version to get full UHS-II speed and get nowhere close to 160MB/s :(So be sure your device can fully utilize the speed at least the camera, the reader can be easily replaced anyway.PS: I had the same card but with 95MB/sec in use before upgraded to the 300MB/s.

Bought from the store to ensure a genuine card.Use in on my R5 and never had any issues over the past 8 or so months.

I wanted something fast to sit inside a new Olympus Pen F - when the camera arrived I put in an old SanDisk 4GB just to play around.. and it was clearly struggling with the write speed. Ran a quick test with the Extreme PRO in burst mode when it arrived and no problems. I did look at some test results where the Lexar equivalent came out a fraction ahead but I then ran into a couple of articles suggesting there was a compatibility issues between these and the Pen F .. this might by now have been rectified but as I'd been happy with SanDisk in the past I went for them again. (no problems over 4-5 months with the first .. bought a 2nd for longer days out / spare)

Superb speed. I am a professional photographer for years and speed is always paramount when it comes to both write (when shooting) and read (when downloading). This card is lightning fast. It's pricey but the speed I gain from it and the time saving really justifies the spending for all my jobs.Mind you however, you do need a UHS-II compatible camera to take advantage of this card. If you don't, save yourself some money and get the 95MB/S card.