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6000 - Tosa / Which Memory Card Speed Worth It?
« on: December 08, 2004, 10:35:10 pm »
Hi,
I've just made a couple of tests with my cards.
I have a Sandisk Ultra II 512 mb SD cards, Lexar 40x 512mb and Lexar 80x 1gb CF cards.
To test the reading speed I've created a 54mb file and put it to all the cards.
Then I was copying the file to /dev/null watching the time.
It took 64 secongs to read the 54mb file from SD card. Therefore the maximum speed for SD card is around 900 kb/s.
For CF cards it took 30 seconds to transfer the file. The same time for Lexar 40X and 80X!
So the speed would be not more than 1.9 Mb/s which is equal to ~13X .
Looks like there's no sence of having an SD card faster than 6X and CF faster than 13X.
I've just made a couple of tests with my cards.
I have a Sandisk Ultra II 512 mb SD cards, Lexar 40x 512mb and Lexar 80x 1gb CF cards.
To test the reading speed I've created a 54mb file and put it to all the cards.
Then I was copying the file to /dev/null watching the time.
It took 64 secongs to read the 54mb file from SD card. Therefore the maximum speed for SD card is around 900 kb/s.
For CF cards it took 30 seconds to transfer the file. The same time for Lexar 40X and 80X!
So the speed would be not more than 1.9 Mb/s which is equal to ~13X .
Looks like there's no sence of having an SD card faster than 6X and CF faster than 13X.