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Reviewbucket.co.uk scanned the internet for SanDisk Ultra SD Class 10 UHS I (SDSDUNC-GN6IN) reviews.
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For SanDisk Ultra SD Class 10 UHS I (SDSDUNC-GN6IN), 2418 customer reviews collected from 3 e-commerce sites, and the average score is 4.7.

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21.9.2015

This is a Class 10 SDHC (Secure Digital High-Capacity) card, meaning it should be able to maintain a minimum serial data writing speed (e.g. when recording a video on your camera) of 10MB/s. This is considered adequate for Full HD (1080p) video recording and rapid consecutive recording of HD still photographs.I currently use a Panasonic 8GB Class 10 SDHC card, which I bought over 4 years ago now in 2011, and claims a speed of "up to 22MB/s". I was keen to compare this with the SanDisk 32GB Class 10 SDHC card under review, which claims a speed of "up to 80MB/s". I thought that the SanDisk will wipe the floor with my ancient (in technology terms)4-year-old Panasonic card but felt the need to do a little experiment to test that assumption.I carried out a simple test by copying a 1.3GB file of photos and pasting it into each formatted SD card. I noted the time taken to complete the writing of the files to each SD card and monitored the speed in MB/s as the data was written. I repeated the test three times for each and took the average (the results were pretty consistent).Time taken was about the same for both cards - 2m10s for the Panasonic and 2m15s for the SanDisk.What was interesting was the write speed. The Panasonic was quite consistent, at about 10MB/s throughout writing the photos to the card. The SanDisk was very different - it started off at a fast pace of around 30MB/s for around the first 30 seconds, then dropped to a very slow 4MB/s for the next 30 seconds, before picking up speed again and slowing down again, in a cycle.So, my conclusion is that the SanDisk is probably fine for photos that require short bursts of writing to the SD card but I worry about whether the SanDisk card will be reliable for recording Full HD video, given that it cannot seem to sustain a high speed over a longer time frame. I tested it with Full HD video and it worked fine so perhaps it is not an issue in practice. However, following my test I've chosen to stick with the old Panasonic card, as the SanDisk is no faster in practice and its fluctuating speed concerns me somewhat. Having said that, the SanDisk seems to work fine and offers huge capacity at a very reasonable price, so perhaps I'm being too picky. Four stars seems reasonable then.
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25.10.2018

The streaming of information is akin to knitting. Row by row the binary is loaded, but when a girl drops a stitch, a hole appears ... and that's exactly what happens with aliasing. Most noticeable is when aliasing is low or non-existent, the edges of the image are smooth. This smooth outline produces a pleasing image, because it apes our own vision, which is analogue.If you put a SanDisk Ultra SDHC card to the test, it will usually exceed its design parameter, this being the case, there was, until recently, few video cameras on the market to exceed the ability of the fastest memory card. There is hardly a fellow out there who hasn't put a memory card in his shirt pocket, only to have his shirt washed.I've never had a 'washed' memory card fail yet ... they are tough little beggars.The problem we have, including SanDisk, is that people take them for granted and consider them indestructible, however, the most destructive force they will ever experience is being plugged in and/or removed when the camera is live ... and the times I've seen this done is countless. You may lose part of its memory, or, in the worst case, all of it, not to mention so much aliasing, its corrupted.SanDisk and most other electronic engineers ask you not to insert or remove the card until you have switched off the camera and waited for a few seconds for it to close the card. Cameras will refuse to switch off until they have done this, so to switch off and remove the card in the next instant will cause a high risk chance of data corruption ... then people blame the card, when it is their fault. Switch off and wait just a few seconds before removing a card. Replace the card with another when the camera is off. Doing this will ensure your cards' long life and excellent pictures. I've never had a problem with SanDisk, but you've got to treat their products properly to get the best out of them, like anything else. If you are looking for a card with a good reputation, you've just found it.
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29.10.2015

Good basic SDXC card from Sandisk, with a price that is extremely competitive when compared to other (lesser?) brands. OK, you don't get lightning write speeds but from reading a few other reviews, what speed there is appears at the start of a burst, of say, rapid fire RAW files being taken, before slowing down, albeit quite considerably. They seem to suggest that a peak of 30mbs write speed can be expected.For me, a very prolific photographer, often taking 100's of images per day, I bought this card for its capacity at a low price, with that enviable reliability that Sandisk always seems to have. I don't know personally of any photographer who has had a Sandisk card malfunction or corrupt a single file.I always have a Sandisk Extreme Pro 64gb 95mbs in slot 1 of my Nikon D7000.This is the card that I download images from in my PC and then delete, whilst slot 2 of the camera is the back up and which I swap round my various cards as they fill up. This new Sandisk Ultra obviously fits into the second category.At the end of the day, we don't always need rapid fire bursts of lots of big files - the vast majority of mine are static landscapes, where a write speed of 20 mb per five minutes would suffice! When I do shoot action or a situation that might require such, then I do have considerably faster cards and will obviously use them then. 64gb is where SDXC technology starts from and compatibility problems with devices gets more varied and where reliability should be of greater importance and a card performing well within its modest limitations is always going to be more reliable that those pushed to their extremes.
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26.9.2015

The Sandisk SDHC Ultra 32GB Class 10 UHS I memory card that Vine offered me was tested with H2TestW in a fast i5 W7Pro machine with an SD4.0 chip slot.In the supplied Fat32 format (32768 Byte sectors) Write speed was 30.4 MByte/s and Read speed was 69.0 MByte/s, and it took just over sixteen minutes to be filled during the write test.Re-formatted as NTFS (4096 Byte sectors), Write speed after an initial peak of 39 MByte/s was a steady 35.0 MByte/s, and Read speed was 81.8 MByte/s, and it took fourteen minutes to be filled during the write testIt is good enough for most purposes such as domestic quality H.264 video and rapid hi-res photos in cameras where the FAT32 will usually be needed,and it easily exceeds the usual Class 10 requirements of 10MByte/s Write speed. However for use only in computers it might be worthwhile to reformat it as NTFS.It does not have a protective clip-case (as supplied with my usual Transcend 32GB chips). I'm swapping chips regularly during a shoot as they fill up with video, and an anti-static protective case is an essential accessory for preventing ESD damage to the exposed contacts.There were no bad locations after a half hour running the re-read tests. W7 suggests that there are 30,895,767,522 Bytes available in the chip as FAT 32, and 30,904,152,064 available as NTFS, ie 28.7GB in both cases.There are other significantly faster "32GB" chips available that make better use of the UHS I or UHS II bus speeds and offer slightly more storage capacity, hence only 4*.
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18.4.2018

I bought three cards on the same day: this one (SanDisk Ultra) along with a SanDisk Extreme and a SanDisk Extreme Pro. All 32GB. The read and write speeds on a computer are as follows:Ultra - write to card: 15 MB/s. Read from card: 80 MB/sExtreme - write to card: 37 MB/s. Read from card: 78 MB/sExtreme Pro - write to card: 50 MB/s. Read from card: 83 MB/s.I tried filming some 4K video on a Panasonic FZ1000, and it works OK on this Ultra card. That particular camera appears to write at about 12 MB/s so there isn't much margin for error.Shooting stills (Raw + Jpeg - about 30MB in total per image) at 7FPS on a Canon 80D SLR, I got the following:Ultra - full speed for the first 19 images,then writes one image per 2.1 secondsExtreme - full speed for the first 22 images, then writes one image per 0.65 secondsExtreme Pro - full speed for the first 24 images, then writes one image per 0.44 seconds.Take those figures with a pinch of salt as it'll depend on the noise and type of image. And the write speeds of the faster cards are quicker in a camera than they are in a computer. But hopefully it's useful background info.I would be very unlikely to need more shooting speed that the Ultra can provide. But would probably stick with Extreme in the future just for that extra security if I ever shoot 4K.
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1.1.2020

Buy the best Memory card on the market, in my view!!Go for the extreme Pro version for fast Mega bits per second to cut down on the waiting time for your camera to store the picture or video. Especially if you are using the raw setting.There is nothing worse than missing a shot because your camera is still writing the information from the picture it took. Equally you want a good read speed. So take notes of the read and write speed of a chosen card especially if you are going to shoot sports or air displays or Wildlife. Not so important for a family portrait or Landscape and look at the Class setting. Class 10 is a good rating. Take a look at Wikipedia and Type in class settings for Sd cards.There is a good article explaining it all. Finally check that your camera can cope with the size of your planned card, it is no good you buying a 128gb or a 1TB card just because you want a massive amount of memory only to find the maximum card for your camera is 32gb or 64gb which can be the case on older cameras. Then get yourself an otg lead, on the go lead, put your memory card in it and transfer to your phone, if your camera doesn't have WiFi.Read full review...
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6.4.2017

I bought this for an ageing DSLR of which this memory type (SDHC) is the fastest standard it supports.I was actually surprised by the performance impact of this card on my camera as it has significantly reduced the delay between taking photos over the much older 10MB/s rated card I was using.At 32GB I can take just over 1200 photos in RAW mode with my 10 Megapixel Pentax K10D, admittedly an old and outdated DSLR by now but if you're like me and have an older SDHC supporting camera that you're not quite ready to get rid of this is definitely the card to get as it's the largest capacity supported by SDHC and at 80MB/s it's damn near the fastest you can get too.I'd highly recommend this for oldercameras if you happen to have a newer camera which supports the newer SDXC standard then I would recommend getting one of those instead as not only are the capacities much higher but the speeds are aswell and if you have a very up to date camera with a very high megapixel count (16-24MP or more) then you'll definitely benefit from the higher throughput of those newer cards.
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25.9.2015

Super fast memory card.Not all silicone is identical, once printed in the factory, the chips are tested for quality of the imprint and the highest quality are the most expensive and will take higher speeds, the lesser prints are sold as the basic speed chips. Having tested the best quality, they are categorised into sustainable burst speed qualities.These are the best chips.80mb'sec is high and should result in a noticable difference in saving a photo in a digital camera than the bog-standard cheap as chips memory cards.PLUS - it's 32 mb so less of a pain swapping cards over.I once lost a some brilliant night shots of a classical outdoor concert as the new stuff overwrote the old on a 16 mb card on a Canon Finepix (top of the range).No warning that the card was full!This extra capacity chip will rectify that issue and increase the saving time, thus the time before the camera is ready to take another photo / video.Excellent quality and one of the best quality brands around too with an impressive 10 year warranty - which I have never had to claim on.
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22.9.2015

I've always rated SanDisk memory cards as a high quality value for money product. In all the years I've used them they have never let me down. So is this "Ultra" card an improvement on previous SanDisk SD cards? Using it in a variety if hardware (camera, laptop and audio recorder), I copied a variety of audio, picture and video files to and from it. I have to say it truly does have a noticeably faster transfer speed. Not necessarily a life changer for your typical home user like myself. But for high volume users I'd imagine the improved transfer speed would be of great benefit. As ever picture and video quality when viewed back are excellent. Though again, not having a professional eye or requirement,with the full HD I couldn't recognise any significant difference over my other older SanDisks. That may also be down to the quality of my screen/graphics cards, etc of course. That said it appears that SanDisk have produced yet another high quality reliable SD card which I have little doubt will outlast any uses I have for it
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16.4.2020

I bought this to use with an older digital camera. Sadly the card was unsuitable as the camera could only accept the old style SD card with a maximum capacity of 2Gb but that's nothing to do with the card and merely my lack of research.However I tested the card out on my desktop and it worked fine in both reading and writing modes of data transfer so I've no doubt it will be fine in an appropriate camera and even though it won't work in my camera, I have a piece of modern studio recording equipment which will accept it so it won't go unused and at such a low price it's a gift.To summarise: If the card is to be used in an older digital camera or other older equipment that requires a low capacity SD card,then first ensure that the camera or equipment will actually accept and work with this type of card before purchase but other than that, it's very good value for money and I'd be quite happy to use it.
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27.12.2018

The product is amazing and does exactly what it says, which is to store lots of pictures/ video.There are some other products that are competitive around this same price ie: more storage/ speed, but ultimately it is a great product to buy.I have previously had a problem with the locking system when it broke and had to be careful whilst inserting the memory card in the camera to avoid it getting locked, but that was a one-time thing.Pros- Great performing card.- Fast reading speed.- Could support higher resolution pictures/ video with good performance.cons- Shooting at ultra-high resolution may be a problem.- Some camera may have trouble trying to read the memory.Recommendation-Would highly recommend this product,since I've been using it for years and hasn't been let down yet.The storage is and performance of this product is good for the price point too.
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21.9.2015

SanDisk have always produced perfectly good and reliable SD cards which have never let me down. This 32mb card is said to be faster than normal SD cards and as such, suitable for camcorders. I notice the makers say that it is ideal for 'mid range point and shoot cameras and camcorders'. That seems to suggest that it's not recommended for pro standard SDLR cameras? Not being technically minded I'm not sure how the info recorded by a £50 compact and that recorded by a £2000 SDLR does not 'fit' on the card in the same way? I can only think that it is like recording music in the old days onto a cassette. You always got a better recording on say as BASF tape than some unbranded Hong Kong cassette.That's not too say that this ScanDisk SDHC card is the equivelent of a Hong Kong Cassette.I guess 99% of users will be more than happy with the quality.
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26.9.2015

Very fast card compared to a a Ultra SanDisc 32 GB with a rated speed of 30 MB/s. I did a little test transferring a 963 MB .iso file to the SanDisk 32 GB 80 MB/s and the 32 GB 80 MB/s from my Computer. The results were as follows:=> 32 GB 80MB/s (This card under Review) : Transfer time = 42.3 seconds=> 32 GB 30MB/s : Transfer time = 89.1 secondsI certainly could not achieve the claimed speed of 80 MB/s but the top speed of around 23 MB/s is still very good. There are many factors that affect the performance of a memory card so I cannot say it cannot achieve higher speeds or even speed closer to the claimed speed. So this is great for recording 4K Video,high speed burst and sports photography but you can still use it even for tasks that do not require the ultra speed.
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15.10.2015

In my compact camera, capacity is the main consideration, not speed. Loaded into my good Panasonic Lumix, set to its top picture size of 16M, the camera showed over 4700 shots available. Great, that means freedom to shoot as much as I want with confidence in the SanDisk brand. A good read speed will be helpful in emptying the card into my computer, and the class 10 specification means that HD video is properly supported by a fast enough write speed.I now plan to get a DSLR camera that will shoot 4K video and use 4K for burst mode, and a bit of googling shows that a class 10 card is marginal. 4K videos might work on it sometimes, but the recommended class of card that will always write 4K video is U3.Read speed does not count here, it's minimum write speed that matters.
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6.1.2018

To someone who can remember when a 6MB hard disk occupied a space bigger than a modern laser printer and cost several thousand pounds, the idea of shelling out less than £25 for over ten thousand times as much on a device you can lose down the back of the sofa (unless you're paying close attention) is still extraordinary. But you can, and it works reliably and consistently. This particular instance is also pretty nippy although I haven't made any proper data transfer speed measurements. It's quite good enough for my use and mostly, noticeable delays only occur when lots of small files are being called from different places,so it's housekeeping latency you're seeing rather than any sluggish behaviour in the SD card.
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