SanDisk Extreme PRO 256GB SDXC Memory Card up to 170MB/s

SanDisk Extreme PRO 256GB SDXC Memory Card up to 170MB/s

SanDisk Extreme PRO 256GB SDXC Memory Card up to 170MB/s, UHS-1, Class 10, U3, V30, Black


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Legal Disclaimers

Not all devices support SDXC. Check with device manufacturer for more details.

* Up to 170MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Performance may be lower depending on 1MB = 1,000,000 bytes. Write speed up to 90MB/s. Based on internal testing; performance may be lower depending upon host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes. X = 150KB/sec.

**1GB=1,000,000,000 bytes. Actual user storage less.



Dimensions: 0.23 x 2.39 x 3.2 cm; 13.61 Grams
Model: SDSDXXY-256G-GN4IN
Manufacture: SanDisk
Dimensions: 0.23 x 2.39 x 3.2 cm; 13.61 Grams

33 Responses

  1. Anonymous says:

     United Kingdom 🇬🇧

    These are very good value these days. Not sure how the picture quality is affected. however, the speed is alot better than my old one.

  2. LiamYoung says:

     United Kingdom 🇬🇧

    I have used Sandisk for years and this was an upgrade to match a new camera – the card is brilliant. The packaging and shipping was excellent and the product arrived on time.

    I would recommend.

  3. Anonymous says:

     United Kingdom 🇬🇧

    Used in a Sony a7III mirrorless camera… keeps up with 10 shot burst speed…. recommended

  4. Anonymous says:

     United Kingdom 🇬🇧

    Just what I needed. Does what it was bought for.

  5. Katelyn Z says:

     United Kingdom 🇬🇧

    Best SD card on the market…reliable…no issues…use them all the times

  6. JeanettGirardi says:

     United Kingdom 🇬🇧

    Another always reliable SanDisk product, wanted fast speed to take holiday photos including underwater and worked perfectly, noticed no drag between one shot and the next which I wanted for the underwater as fish don’t tend to stay still. Very please with results.

  7. AnhBOZWren says:

     United Kingdom 🇬🇧

    Use with the SanDisk USB reader for lightning fast transfers!

  8. Anonymous says:

     United Kingdom 🇬🇧

    I keep all the pictures on them, when it’s full, store it safely, then buy another one.

  9. Anonymous says:

     United Kingdom 🇬🇧

    I had this for sometime now and it going strong

  10. AnastasiaLove says:

     United Kingdom 🇬🇧

    Not much to say about the item but did it’s job

  11. Anonymous says:

     United Kingdom 🇬🇧

    Which is better the write speed of 170 or 200 mbs ? If it’s the 200 version of this card buy the 170 mps as in the advert.. you might be lucky to be sent the 200 mps one instead as I got sent. yeah great purchase and value for the money.. as I need a high speed card.

  12. KarenDarden says:

     United Kingdom 🇬🇧

    his product does everything it should do perfectly with no hassle. Little expensive but can’t complain as it works perfectly

  13. Chris Matyszczyk says:

     United Kingdom 🇬🇧

    Just what I wanted at a pice I feel was reasonable.

  14. RenatoHockensmi says:

     United Kingdom

    Size suits my needs keeps photos count down so all days/weeks not on one card, never had any issues but I always format before using, would definitely recommend and buy again.

  15. Anonymous says:

     United Kingdom

    I had a slight glitch with this second day in with my Nikon D750, where I got an error message a few times. However, i think it was just a little dirt contamination on one of the connectors. Once cleaned it has performed very well indeed. Nice fast card and excellent storage capacity for the price.

  16. Harriet Flook says:

     United Kingdom

    I have a bunch of these in 32Gb and 64Gb, this is my first 128Gb. I use these for filming 4K 422 broadcast video for a weekly TV show so the cards have to work. I also use the slightly slower Extreme cards on an Olympus camera used for stills and B Roll.

    5.0 out of 5 stars Most reliable SD Cards

  17. SiennaRosenberg says:

     United Kingdom

    It was a initially a bit to tight in my D40X SD card slot, where the exit spring would not eject it as it normally would. After about 10 insertions and thumbnail assisted extractions, it began to eject properly. It is now working fine.

  18. VaughnFindlay says:

     United Kingdom 🇬🇧

    Ref: SanDisk Extreme PRO 64GB SDXC Memory Card up to 300MB/s, UHS-II, Class 10, V90, U3
    Claims to be 300MB/s – tested at 372MB/s ??
    Claims to be 64GB – tested at 59GB
    bundled with a Sandisk Extreme Pro UHS-II USB-C Reader (Model SDDR-409).
    The reader is excellent with fast transfer. The card is a tad disappointing, but the read/write is a bonus.
    Over a ton is pricey, but I’m keeping them.

  19. Anonymous says:

     United Kingdom

    I use these for my professional work and they’ve never let me down where other brands have. I’m old enough to remember when these cards would cost 4 times as much as they currently do so no need to look elsewhere for this money. Totally recommended

  20. themummyblogger says:

     United Kingdom

    Purchased a set of these for use on the Panasonic Lumix GH5M2 (which can record onto two at once) and have so far not experienced issues in recording 4K of them, even at 60fps (it might be the CODEC I’m using that has not revealed any issue with the 170MB/S performance rating).

  21. SwineWeb News says:

     United Kingdom

    Bought this SD card to use in my Sony A7iii. Read/write speeds are as fast as I’d expect and the 128gb capacity is perfect for my needs. I’ll definitely look into getting a second one when I start to shoot more video – can’t go wrong with one of these.

  22. Anonymous says:

     United Kingdom

    As a music and sports photographer who can end up taking 5,000+ images a day this card is perfect and it’s also big enough to use for decent amounts of video so I bought a pair just to be on the safe side.

    It’s certainly fast too and doesn’t have any problem keeping up with my Canon EOS R which is where it gets most of its use.

  23. Mayra says:

     United Kingdom

    I shoot photos and video on a variation of cameras, sony A7IV, Lumix S5 etc. and found that these are perfect for recording videos at long lengths and capturing raw uncompressed photos as well.

    They read at 170MBS and write speed is just under 90MBS so quite fast for the price. Most DLSR or mirrorless cameras shoot video at 150mbs (18MBS), so there is plenty of speed. I have bought 4 of these and they are working great, no problems as of yet and seem to be quite reliable.

    A good thing to note is to make sure that you format the cards inside the device you are planning to use them in rather than the computer.

  24. Chris Horymski says:

     United Kingdom

    This card is great, nice fast card for use in camera. Takes all the data as fast as my camera can throw at it. Really good price/GB/performance.

    For anyone reading comments and seeing others negative reviews regarding speeds not being as advertised please note to get the maximum speed you need to be using specific compatible card readers, for anyone using generic card reader or one built into their pc/laptop you will not reach the max read speeds, the speed will be lower dependent on the speed capabilities of your card reader.

  25. MelvinHeymann says:

     United Kingdom

    This memory card is working well and that is most important thing you need as a photographer or videographer! I am smart like some people who are testing cards like this one and what matters to me is that it works well and the storage is enough for me! And the value for money is great! I think this card is not too expensive and that is another thing I like about it!

  26. Reuters says:

     United Kingdom

    This card works in a Panasonic TZ90-EB-S point and shoot camera, it does what I wanted from it- Which is an up to date SD Card and size. Cannot say whether speed advertised are correct, but I am happy with results it produces so fa

  27. Anonymous says:

     United Kingdom

    Can only use 100mb/s on PC though a card reader and USB3 slot, so the extra speed isn’t used until these things get an upgrade. I imagine in the future when that happens 64gb will be too small anyway.
    Not sure if my Canon 6D uses the extra speed, since it has a buffer when using burst shooting which does slow down when it’s full. I haven’t tested against my other card which is 120mb/s but it seems around the same so it could be the write speed of the camera that is the limitation.
    I have been using a few weeks now and all seems fine. Had the odd image glitch but that could be the camera since it was second hand.

  28. ConcepcFried says:

     United Kingdom

    The capacity and performance of the Standard Definition card is excellent. Worked fine in my Canon EOS m50 mark ii mirrorless camera.

    Sorry, what was that? SD does not stand for ‘Standard Definition’? What pray tell does it stand for? Do you know? Do you care? If you do, why are you only googling it after reading this useless review? You have until the movie I’m watching (Titanic) finishes to answer me. Oh yeah, that reminds me – this SD card can sink to Adobe products on my laptop very quickly due to its fast read write speeds…sorry, what was that? It’s not spelled ‘sink’!?

  29. Steve Conaway says:

     United Kingdom

    SD cards have various speed ratings and other categories. Ideally you need to match the card to the capabilities of your device, for example putting a slow card into a very fast device will mean that everything is very slow. Similarly, putting a fast card into a slow device will give you none of the benefits of the fast card and will probably just cost you more money for no added benefit. The situation then gets more complicated because different manufacturers’ models of cards with similar specifications behave differently in the same device.

    I was looking for an SDXC memory card for a Canon EOS 250D DSLR camera. This particular card was very well matched to the capabilities of this camera. Despite claiming to be 170 MB/s card, it actually performs at about 65.5MB/sec when recording 4K video, which is the most stressful task that the card is required to perform. Although this may seem slow, this is one of the fastest actual write speeds attainable within the EOS 250D. It is slightly out-paced by one of the Sony Professional cards, which is also available on Amazon.

    This card also comes with a serial number to restore lost data (deliberately obscured in my photos) and a small, hard-shell case.

    5.0 out of 5 stars Ideal for DSLR 📷

  30. Anonymous says:

     United Kingdom

    I bought 2 of these for my new and old Cannon cameras alike, one is a D1000 EOS which I have had for a number of years and the other is a D4000 EOS that I just purchased. The SD card fits without an adamper in the D4000 and works like a dream however it can not be formatted by the D1000 camera and when I put it on my PC there appears to be no way to split the disk into 2x 64GB which I believe is the maximum my D1000 can see. I will keep these and use them both on the D4000 but you should be forewarned and double check the maximum size your camera can take before you buy one of these. As for the value I dropped 1 star because these are just over the 4to1 ratio (4x<=>GB’s) that I use for all Memeory purchases however given that this is Branded memory I can overlook that small issue.

  31. Anonymous says:

     United Kingdom

    I recently decided to but a Sony FDR-AX700 Handycam, so I can shoot 4K videos to show on out 4K TV, but to do that you need a good quality and fast SD card, and as the Handycam take to card I bought a pair of these purely for that purpose.
    Yes, you can get slower speed ones that are cheaper that ‘might’ do the job, but I didn’t want to take that chance.
    Also you can go ‘over the top’ and buy more expensive ones but why spend unnecessary money when these will do the job perfectly well.
    After a few shoots I am well impressed with these cards, and I will be buying a couple of these cards in a higher capacity (256GB), so I have 2 in use and 2 as standbys.
    I have used SanDisk Memory cards and USB sticks over many years and never had one fail.. that says it all really !

  32. Anonymous says:

     United Kingdom

    When it comes to removable storage I rely heavily on SanDisk quality. I use their Extreme Pro range in my Nikon DSLR camera due to the superior transfer rate for multi-burst shooting, and I use their Ultra range for everything else. When I’ve used Ultra cards in my camera I’ve noticed a bottleneck in data transfer when shooting continuous shots to the point where the camera stops taking photos. I’ve not yet experienced this with the Extreme Pro cards.

    I would recommend considering the Ultra range if your storage demands aren’t overly demanding though. Currently I have four 1080p IP security cameras each with 64GB Ultra cards installed, and three dash cams ( Nextbase 512 front and 112 rear in my car and 412 front in my wife’s) with 32GB Ultra cards. The transfer rates of the Ultras are still more than good enough to process HD video from all of these sources so the extra expense of using the Extreme Pro cards isn’t necessary.

    I’ve been using SanDisk cards for as long as I’ve been using digital devices and I’ve never lost any data in that time. I have no hesitation in recommending SanDisk memory cards, with the Ultra range offering exceptional value for money while the Extreme Pro range provides exceptional performance.

  33. Veshengro says:

     United Kingdom

    Golden Review Award: 5 From Our UsersI’ve had two batches of two 32Gb with about 6 months between each purchase. In light of other reviews about speed and fraud, I did test with h2testw and SpeedOut with this last batch I had purchased in the past few days. The read and write speeds did not exceed 24MB/s. I was all ready to return to Amazon, but then decided to test my other cards – which also showed slow speeds and no-where near the 95MB/s suggested by Sandisk. I though that was odd because the earlier batch have been really good fast cards and not slowed my workflow at all.
    I then read up about testing and established the built-in SD card reader to my laptop and desktop may hinder the speed.
    I purchased the HAMA USB 3.1 type C card reader, which arrived the following day. Tested the new and old cards, and the speed – both burst and constant, read and write – was in excess of 80MB/s. Not quite that suggested by Sandisk, but what it did demonstrate to me as that testing is all very good but you must ensure that your hardware is not choking your speed…. it’s not all just about the cards, but also the bus speed and hardware.
    So be warned folks – don’t think you have a duff card based on one test.