24 of 25 people found the following review helpful
on 29 May 2011
I purchased this SDXC card last week to use in my EOS 600D. Gave it the first proper test yesterday, shooting about 900 shots with it, which didn't even take the card to halfway full. This is shooting in RAW using auto ISO set to a maximum of 6400. Under these circumstances, the camera showed a capacity of 2,147. (going on my very shoddy memory, but it was something of that order) I experienced no problems whatsoever. Nice and quick to write and transferred over to the laptop's external HDD just fine.
I shall be buying a couple more of these cards before my trip abroad later in the year. At this price, it'd be madness, and, quite frankly, rude not to. This is my first gargantuan card; I'd limited myself to 8/16GB cards in the past but thought I'd get a biggie. Thus far I'm wholly impressed on the performance of this card.
The only niggle, and the reason I've only given it four stars is this: the card doesn't come with a protective case. This is no huge problem as when it comes to card-swapping, you can just use the case of whatever card you replace it with but would it have killed them to supply a lil plastic box with it? I don't even mean one of the fancy cases like some cards come provided with: the funky rubber cases my Samsung cards came with or the little hinged case my Panasonic card came with: just a little standard clear plastic case would've done as they're always handy to have. Plus you can build a mini Stonehenge out of them when you're bored.
On the whole though, great card, highly recommended. If Transcend can see their way into providing us with a little case, it'll be five stars all the way. *nods*
317 of 340 people found the following review helpful
on 16 April 2010
As I mentioned in my previous review on Transcend Class 6 MicroSD, huge flash memories today are everywhere, and they get bigger and bigger by the minute...
In my case, initially, I wanted to try one of the newest 16GB SDHC cards, to use it with my Kodak Zi8 as large recording media, with my PC for quick transfer/backup, and even with my XBOX 360, which - with the latest dashboard update - now supports also installation of TWO non-Microsoft removable USB flash drives/readers (up to a combined size of 16 GB), as ultra-fast storage media to _install games_, profiles, etc.
Problem is, as many of you probably have already found out lately (especially if you bought any 16 or 32 GB flash memory, for instance...): bigger is _not_ always better...
As a matter of fact, according to several reviews, many 16GB-32GB flash memories, even some from the best brands, can produce rather disappointing performances/reliability, especially if compared to smaller-sized models from the same product lines...
Add to this the reliability/failure rate risks of extremely large memories (which can suffer _a lot_ the high temperatures and stresses produced by the continuous use they allow, especially with high-performance devices...), and it is easy to come to the conclusion that it is still much safer, cheaper and even better (performance-wise) to invest in more smaller, high-performance flash memories, than rely on a single, extremely large one, just to avoid having to replace the media from time to time...
(Just magine losing ALL of the priceless memories from your once-in-a-lifetime, expensive-like-hell, unforgettable experience AT ONCE...)
So, in the end I decided to avoid 16GB models, and I tried one of the fastest (and apparently more reliable), latest Class 10 8GB models from Transcend, instead.
I chose Transcend, since I have been using their flash products for at least eight years, with great performances, and I NEVER lost a single byte out of them: I am still using _everyday_ for small backups their first 256MB CFs, bought in 2002! (Too bad there are a LOT of fakes out there, so beware who you buy them from...)
By the way, Class 10 means, as in all SDHC cards, that these cards should offer a minimum _write_ speed of 10MB per second, compared for instance to the typical 6MB/sec you can find on Class 6 cards.
Write speed, by the way, IMHO is much more important than _read_ speed, since many high-performance cameras need it to allow, for instance, continuous shooting at very high picture sizes, or long Full HD shoots without having the device "choking" on the high throughput...
Moreover, in case you should use cards with slow write speeds to transfer huge amounts of files from one device to another, you might easily end up looking like Dorian Gray's reflection, waiting for your file transfer to complete...
So, how did this specific little card perform, in the end? Well..LIKE A DREAM!
First of all, I tried the usual flash benchmark, in less than ideal, REAL WORLD conditions: what is the point of running benchmarks in conditions that you will almost NEVER enjoy in real life? (i.e. no other applications bothering the system, no mouse movement, no Internet connection, etc...)
I tested this with an S5 Transcend reader (not included) and a flash memory benchmark from a known Bullock-first-named suite of tools, with at least FOUR other different memory-intensive applications running (but not accessing the file system), including my Internet browser (not browsing) and e-mail software, moving the mouse from time to time, and I got anyway a read speed of almost 19MB/sec (!), on 64MB-sized files, and a write speed of just a little less than 10MB/sec on the same size.
Please note that on very small files (few KB, less than 2MB, very uncommon these days...) the write speed plunged to approx. 4MB/sec. or even less, but this is very common with any flash-based memory, due to their high access times. On 2MB-files, the read speed was approx. 18MB anyway, and the write speed was approx. 9MB/sec.
But this was only a benchmark, and usually such benchmarks can be very far from everyday use; so, I started doing _actual_ real-world tests, and I copied 4.81GB of MP3 files (_hundreds_ of them) of ALL sizes to the card: the copy took slightly more than 7 minutes, so I obtained a _real_ combined writing speed of more than 11MB/sec, which is almost TWICE the rated writing speed of a Class 6 card!
But the greatest surprise came when I started copying _very_ large files, the kind of files you would obtain with HD or FullHD recording, for instance: I was able to copy a 1GB+ file (1063MB) TO the card in LESS THAN ONE MINUTE, which confirmed the approximate 18MB/sec. result of the benchmark, a _real_ result similar to cards from other brands costing almost TWICE as much!
By the way, with 100-300MB files, the read speed reached consistently 20-21MB/sec (!) and approximately 10MB/sec. with the microscopic files mentioned above, and this is MUCH more than I was hoping for this little wonder, at this price...
I also tested this with my trusted Kodak Zi8 camera, and again it worked like a charm, with _no_ glitches even after several continuous minutes of recording, (so far, at least...). Finally, my XBOX 360 also accepted and formatted the card immediately, as I was hoping, so now I have 16GB of fast-load memory for my games (8+8GB on 2 card readers).
So, what can I say? These Transcend Class 10 cards IMHO are really worth the price, at least for their performances, and if they turn out to be as reliable/durable as their smaller and older companions, I will be using them for a _long_ time, hopefully...