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Old May 11, 2006, 7:15 AM   #1
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Is there any free software out there which can find out how fast your memory cards are? ie. 40x 66x 133x etc.




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Old May 11, 2006, 9:42 AM   #2
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Perhaps off-the-shelf benchmarking utilities would work. Just have the software benchmark the card in a card reader (seen as a logical drive by the computer). You may not get absolute speeds, only relative, and of course you will be limited by the speed of your card reader/computer interface (i.e USB 2).
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Old May 11, 2006, 9:54 AM   #3
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Based on your previous posts, it sounds like you're using a Rebel XT.

Rob Galbraith has some tests of popular cards in that model here (the way a camera interfaces to a card will influence how fast you can write to it, so you can't always go by how fast it's rated or tests in a card reader):

http://www.robgalbraith.com/bins/mul...?cid=6007-7699


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Old May 11, 2006, 9:56 AM   #4
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Thanks JimC, thats exactly what I'm looking for!
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Old May 11, 2006, 6:04 PM   #5
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for rough calculation purposes, "x" in this case stands for 150Kb/sec. a 40x card would therefore be 6MB/sec (40x150Kb= 6,000Kb, or about 6 MB/sec), an 80x card would be about 12MB/sec, and so on. you can use this to estimate transfer ratesfor brands not listed in the benchmark tests. since many of the newer, faster cards are not listed (Twin-MOS 140x 1GB, for example), this calculation may offer a clue as to how fast those cards might perform relative to others.

a better question might be to ask what the actual write speed of your camera is, rather than the transfer rate of the card, since flash technologyhas createdtransfer rates far faster than any camera can keep up with. as apractical matter, memory cards faster than about 10-12MB/sec (80x) won't make much difference in the field, and a 133x or 140x card won't record images any faster than a 60x one in most cases. but it can make a difference in the download and clear speeds when you plug the card into a card reader, assuming you have a USB2 port, or some other fast transfer device to connect to your PC. and since even the fast cards (i.e. those above 100x) are now dirt cheap (under $30 for a 140x 1GB card at Newegg), there is no reason not to use them... after all, faster USB connections WILL come along, even if your camera won't get any faster...
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