64GB SDXC Class 10 Flash Memory Card Up to 30MB/s (TS64GSDXC10)

The 1-star threads are like watching a committee of blind men describing an elephant. Unsurprisingly, no one has the complete picture, but a lot of Canon owners think these cards are bogus. SD card technology is very complex, the Class system is often misunderstood, and there is a long history of compromised cards appearing on eBay -- or even from reputable dealers who have been hoodwinked. Kingston cards are most often faked (or taken from the midnight production run); that's because Kingston has about a third of the flash card market and doesn't forge their own chips, but any manufacturer can be spoofed. It doesn't pay to buy cheap cards on eBay or less reputable sources. An SD card contains a controller chip and flash memory chips, even the microSD versions. Realize that SD means Secure Digital, and that security comes from crypto managed by the controller (MMC cards didn't have that bloat, but Hollywood DRM requirements made sure they faded.) The controller can be pretty powerful: the Samsung SD controller is a 32-bit ARM TDMI chip with 128 k of code space -- that's cell phone power. It handles I/O and fading (when the card slowly wears out its NAND sites after about 100,000 hits so writing is randomly distributed and kept track of), the factory self-test, and a host of other functions, but it can also be programmed to report a false storage capacity. Sometimes the firmware on the controller or its crypto or something else on certain cards leads to problems with certain hardware, as it has, for example, with the Samsung Galaxy III and maybe the Canon cameras. Usually the card is found to confirm to SDcard dot Org specifications and the hardware is to blame, but you never know. To test the actual capacity of your card, use H2testw, which is free. It writes the full amount of data to the card and then reads it back (this nukes whatever was on the card). This can take more than an hour with a 32 GB card but it tells you if the card indeed holds 32 GB or has problems. It also gives you read and write speed numbers, but it's unclear whether the numbers are for random read/write, or sequential read/write. Sequential write is what photographers and videographers care most about. Sometimes a Class 6 card might test faster than a Class 10 card, when using computer read/write tests or even in a camera that wasn't designed with higher capacity cards in mind. That's because they use smaller block sizes (there's no cache on an SD card). Explaining the significance of this is getting too far into the weeds for an Amazon review, and modern devices and their firmware should not have that limitation. To test random and sequential read/write speed, use CrystalDiskMark, also free. Run the full suite; it won't take long. CrystalDiskMark requires that the card be formatted, and the most reliable way to do that is to use the free tool from sdcard dot org. A 32 GB card will may report 39.9 GB before formatting and 29.8 GB after; don't worry, you haven't been ripped off. Unfortunately, there's no easy way to read the manufacturer's ID off the SD card, even in Linux, to determine who actually made the card, because you have to have it connected directly to a motherboard; an SD-to-USB adapter won't work because it doesn't pass through disk data, and that's what's in nearly all computers. But what do you care, so long as the card's as big and fast as claimed? Now, what about the Transcend 32 GB SDHC C10 card? Here are full test results from CrystalDiskMark: Transcend 32 GB SDHC C10 ----------------------------------------------------------------------- CrystalDiskMark 3.0.2 (C) 2007-2013 hiyohiyo Crystal Dew World : [...] ----------------------------------------------------------------------- * MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s] Sequential Read : 19.953 MB/s Sequential Write : 13.786 MB/s Random Read 512KB : 19.618 MB/s Random Write 512KB : 13.827 MB/s Random Read 4KB (QD=1) : 3.003 MB/s [ 733.2 IOPS] Random Write 4KB (QD=1) : 1.414 MB/s [ 345.1 IOPS] Random Read 4KB (QD=32) : 3.491 MB/s [ 852.3 IOPS] Random Write 4KB (QD=32) : 1.842 MB/s [ 449.8 IOPS] Test : 50 MB [F: 0.0% (0.0/29.3 GB)] (x5) Date : 2013/05/12 18:19:47 So you can see that the sequential write speed, what matters to a photographer or videographer, is over 13 MB/s, more than 30% above the C10 spec. The other speeds aren't to shabby, either. There's no way that this card is too slow for a contemporary camera, still or video, that is functioning properly. Also on Amazon for a very attractive price is a Sony 32 MB SD card. Here are the full CrystalDiskMark test results for it: Sony 32 GB SDHS USH-I Sequential Read : 19.998 MB/s Sequential Write : 14.115 MB/s Random Read 512KB : 19.772 MB/s Random Write 512KB : 13.173 MB/s Random Read 4KB (QD=1) : 3.682 MB/s [ 899.0 IOPS] Random Write 4KB (QD=1) : 2.302 MB/s [ 561.9 IOPS] Random Read 4KB (QD=32) : 4.517 MB/s [ 1102.8 IOPS] Random Write 4KB (QD=32) : 2.323 MB/s [ 567.0 IOPS] So the Sony is slightly faster, 40% over spec. H2testw also reported full capacity and no errors for this card, so they are both top notch (The Sony doesn't come with a little case and the case for the Transcend case is about twice as big as it needs to be and so won't fit in the little pockets in a modern camera bag. Big deals.) Just for reference, here are the results for a contemporary USB thumb drive: SanDisk Ultra 32 GB USB thumb drive Sequential Read : 22.508 MB/s Sequential Write : 7.985 MB/s Random Read 512KB : 22.365 MB/s Random Write 512KB : 1.767 MB/s Random Read 4KB (QD=1) : 3.719 MB/s [ 908.1 IOPS] Random Write 4KB (QD=1) : 0.520 MB/s [ 126.9 IOPS] Random Read 4KB (QD=32) : 3.871 MB/s [ 945.0 IOPS] Random Write 4KB (QD=32) : 0.482 MB/s [ 117.7 IOPS] As you can see, this USB drive is faster than the SD cards for reading, such as playing music, running software, or looking up data, which shows that it is nicely optimized for its intended functions. As an aside, anyone who thinks they have lost data on an SD card can recover pictures using the free tool at z-a-recovery or recover everything(!) with the free PhotoRec tools. So, if people want to whine about these SD cards in their particular cameras, they should run these simple, free tests and reach their own conclusions about whether the cards are "too slow." The cards test above spec objectively. And they both work flawlessly on my still (not Canon) and video cameras. I think they have gotten a bad rap here from people who don't have the full picture, so to speak. I'll also post this as a review, and on the Sony 32 GB page, too. I hope you found it informative.

This works very well for my application, which is in a 2015 Dodge Durango SD slot (UConnect 8.4N RA4). Many car SD card slots are limited to cards formatted with the FAT32 filesystem, and the maximum size of a card formatted with FAT32 is (as the name implies) 32GB, so for a lot of cars, this is the best you'll get without some luck and or/hacking. Many also list a maximum speed "class" of 8, but selection of those is pretty slim and usually far more expensive these days. Oftentimes, Class 10 will work just fine. I've owned several Transcend products, from flash drives to SD cards to an SSD, and I've never had a single issue. Flash memory is inherently stable, of course, but Transcend has yet to let me down. I use their flash memory in my phone, car, and computers. Sure, you could spend more, but really, flash memory is made in two factories, that's it. Both make good products, and you'll get the same thing no matter what the label is, as long as it is a recognized name brand and not a nonbranded knockoff which often uses far smaller capacity chips than listed. Transcend offers great value and a recognized name. With Class 10 speeds, the card ceases to be a bottleneck like they were years ago. YOu may notice it takes some time to completely fill the card with ~30GB of data, but that's to be expected with SD currently.It certainly won't slow down reading of music or writing of photos from the camera. Fully Class 10 compliant, Transcend’s Premium SDXC/SDHC Class 10 Cards help improve camera response with ultra-fast read speeds of up to 30MB per second. This outstanding performance is ideal for capturing high-resolution photographs and flawless Full HD videos.Transcend's SDXC/SDHC Class 10 Series memory cards come in a wide range of capacities from 8GB to 128GB to fit your storage needs. Whether you have a simple point and shoot or a high-end DSLR, they are the perfect everyday SDHC card to have during all occasions. The versatile SDXC/SDHC Class 10 cards support the latest Class 10 compliant cameras and camcorders, and are also backward compatible with any devices below Class 10. To improve post production efficiency, maximize the transfer rate by pairing the SDHC card with Transcend's USB 3.0 RDF8 Card Reader to achieve a speed of up to 22MB/s. With a purchase of Transcend’s SDXC/SDHC Class 10 memory cards, you can download RecoveRx software for free. This user-friendly application allows you to conduct an in-depth search within your storage device for traces of erased files to be recovered.

I have been using this flash card for many years with my Nikon and it has never failed me. A very reliable little storage workhorse that I have used many, many times.

Je ne sais plus depuis combien d'années je l'ai et si on la trouve encore, en tout cas, elle fonctionne très bien, jamais eu de soucis d'écriture/lecture.

Ho acquistato la scheda per implementare le capacità di memoria del mio Nokia Lumia 620. La capacità media di una 16GB è ottima, ideale per uno smartphone di medio utilizzo.. Tante foto, qualche video e app varie.. Veloce e agevole nel salvataggio e lettura dati. Ci sono schede dai dati tecnici sicuramente migliori, e da capacità di memoria praticamente infinite per un telefonino, ma con un costo completamente diverso.. questa scheda è un ottimo compromesso per chi non ne fa un uso professionale o massiccio.. La qualità buona viene inoltre esaltata dallo straordinario prezzo di acquisto.. periodica promozione by Amazon che ha reso il prodotto un vero must per chi cerca una buona qualità media a costi non eccessivi. Rapporto qualità / prezzo davvero eccezionale. Consigliata.

it's original and working good.

Superschnelle Datenübertragung und funktioniert problemlos.

nice at this price