SD Card Review ?

knowlesy

knowlesy

knowlesy

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Couple of questions,

Can anyone share any links to SD class 10 reviews or speed comparisons as all I can find is class 6 reviews from what I can gather Lexar are the boys followed by your sandisk extreme 3 and then after that I havent got a clue ...


Or Ive seem some "ruggeredised" PNY class 10s for fairly cheap and 2 x 8gbs end up a couple of quid more than 1 x trancsend 16gb class 10 just didnt know which way to go ?

suggestions please :o ???
 
thats the main review Ive found however I didnt see anything referring to class 10 ?

and raymond I concur they are of excellent quality but are of a high price, just looking for reviews of newer cards to see how they compare compared to a 1 year old review ^^^
 
AFAIK - Class 10 have a read/write speed of 10Mb minimum according to wikipedia, and these class 6 cards beat that by a mile..
Other than that Im out of links as I was looking a couple of weeks ago, in the end I went for the SANDisk extreme - good cards, and not that pricey really - I paid £199 for my 1GB IBM microdrive when I got my G2, though that was more years ago than I really like to think about!
 
It's my understanding that the class designations are based on the sustained transfer rate that you need for video recording. Not the bursts of speed that are better for still photography.

On a less scientific note I couldn't really tell the difference between the speed of my basic class 2 Sandisk cards and some class 4 Samsung ones. However despite only claiming to be class 6 my Sandisk Extreme III (30MB/s) is much faster.
 
i love the Sandisk Extreme III 4gb cards. Very fasts data rates and well worth the £15.

Oddly though they don't seem to do any fast microSD cards which is a shame. You can get kingston 16gb class 10 microSD for about £85
 
I find this interesting, and something I've never gotten to the bottom of.....

The review link provided by edgedemon shows various speeds in tests for these cards, but these are of course only benchmark tests in 'lab' conditions. We here in this forum would tend to be more interested in how this will apply to real life camera shooting - will it actually reduce the time to save images to the card? I'm far less bothered about the read speed - I can happily wait to transfer photos to my PC, but would prefer a faster camera whilst shooting, less lag waiting for things to save to the card.

The other variable is the camera itself - I've read before that each camera may perform differently with each card (significantly so) - hence the charts pulled together to test this by Rob Galbraith (e.g. http://www.robgalbraith.com/bins/camera_multi_page.asp?cid=6007-9424) - but these are over two years out of date and therefore no longer relevant as the memory card world has moved on so much.

So how does one really know what the fastest memory card is, in practice?

I have a few memory cards, including a Sandisk Extreme III, a Lexar Professional, and some Transcends. Whilst the Transcends are class 10 and the Lexar/Sandisk are Class 6, the former is most definitely slower in the real world (using a 450D).

I've learnt a few lessons when thinking about memory cards. There is no definitive answer as to which is the fastest card. There are too many variables that impact on this speed. There are lots of myths and legends about memory cards, data loss etc. And that the only way that I have found to cut through all of this is to buy the best and be done with it. Which is pretty much what Raymond said in his first reply! Although I would highly recommend Lexar as well from my experience to date.
 
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