Aachieving those 30mbps xfer rates

[ewitt]

Hey all...
So i've purchased several types of SD and SDHC cards over the years...
most recently i've gotten a 16gb Patriot class 6 and a 4gb Sandisk Extreme III

the Patriot being class 6 i know is slower so i wont bother talking about transfer rates with that one....
BUT the Sandisk has 30mbps printed right on it. I have never been able to achieve 30mbps transfer rates out of these things. 17mbps read and 10mbps write is about as fast as i have ever gotten.
I have tried using two different readers, internally powered (laptop), externally powered (desktop) with the same results.

Anyone have any similar experiences?

[Dailow]

Transfer speeds are very dependent upon the quality of your memory card reader. You can check Rob Galbraith's web page for some test results - he's tested multiple memory cards and card readers and posted the results:

http://www.robgalbraith.com/bins/reader_report_multi_page.asp?cid=6007-9392

[adam8080]

Look at your reader device speeds and your hard drive write speed and see where the hold up is.

[ewitt]

aha, well after a bit of testing...
for the desktop, it's my reader...
laptop... reader, and the hard drive isnt too promising either... that tops out at about 25mbps

thanks for the info guys!