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Help Test An SD Card...

post #1 of 6
Thread Starter 
im trying to test a SanDisk Extreme HD Video 30MB/s SDHC I class 10 32GB card bought from Buy.com

part number: SDSDRX3-032G-A21

i used this program and got speeds of only 12MB/s. using my [dell m1530] laptop.

i also tested it using a 2.0 USB-SD reader and got speeds of only 800kb/s...



what do i need to have speeds anywhere close to what's being advertised?
    
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post #2 of 6
Dude. Your fine.
Quit panicking.
12MB/s is good for a Class 10 card.

http://en.wikipedia.org/wiki/Secure_...#.C3.97_rating
post #3 of 6
Thread Starter 
12MB/s is probably good for a class 10 but this cost me a few bucks short of $100.
if i just wanted a regular class 10 card i'd have picked one of the $40-$50 cards. i picked this one for its 30MB/s capabilities.

its advertised as a 30MB/s card i can't even seem to get half that...
    
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post #4 of 6
Well It depends a lot on your card reader / controller.
If you truly want to see the card reach 30Mb/s, you'll probably need to buy a 500 dollar card reader. Good luck with that.

I would also try using a program called HDTune.. I use it to benchmark HDDs and flash drives all the time. It might give you more accurate results.

All of the class 10 cards have very similar speeds. You really shouldn't have spent so much on a card.
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post #5 of 6
Quote:
Originally Posted by Remix65 View Post
i used this program and got speeds of only 12MB/s. using my [dell m1530] laptop.

i also tested it using a 2.0 USB-SD reader and got speeds of only 800kb/s...



what do i need to have speeds anywhere close to what's being advertised?
You have to remember that you're bound by the bandwidth limitations of the USB interface, which both your built-in and external readers use.
post #6 of 6
Thread Starter 
Quote:
Originally Posted by Anton338 View Post
Well It depends a lot on your card reader / controller.
If you truly want to see the card reach 30Mb/s, you'll probably need to buy a 500 dollar card reader. Good luck with that.

I would also try using a program called HDTune.. I use it to benchmark HDDs and flash drives all the time. It might give you more accurate results.

All of the class 10 cards have very similar speeds. You really shouldn't have spent so much on a card.
Quote:
Originally Posted by sub50hz View Post
You have to remember that you're bound by the bandwidth limitations of the USB interface, which both your built-in and external readers use.
when i got different speeds i figured the controllers of my card readers were bottlenecking me.
i just was a little skeptical coz of the fake cards out there.

i hope my camera can take advantage of the speeds.

the card is quality overall besides just speed and i'm gonna have it a long time.
    
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