Determine read/write speed of a micro SDHC Card?

[thestrangebrew1]

I've got a few micro sdhc cards that I've had for a few months and don't have the packaging anymore and would like to know how to determine the read/write speeds on them if possible?

 

[postmortemIA]

Does your laptop or monitor have micro SD reader? you can run any disk benchmark once you plug them.

 

[thestrangebrew1]

Does your laptop or monitor have micro SD reader? you can run any disk benchmark once you plug them.

Thanks. I believe my wife has one on her laptop so I'll try that tonight.

 

[dave_the_nerd]

The stickers on them might - might - say "class 1" or "class 10" or something.

http://en.wikipedia.org/wiki/Secure_Digital#Speed_Class_Rating

That's a speed rating.

 

[ShawnD1]

The tool I just used a few minutes ago is called HD Tune. Scroll down to the free version:
http://www.hdtune.com/download.html

I don't know about random speed, but who cares. If it says your flash drive is 20mb/s, it probably has good random as well. Getting 3mb/s probably means the random and not-random speeds are both terrible.

 

[Coup27]

The stickers on them might - might - say "class 1" or "class 10" or something.

http://en.wikipedia.org/wiki/Secure_Digital#Speed_Class_Rating

That's a speed rating.

This. All SD based cards have a class rating on them which indicates both read and write speed. This is very important when choosing a card to go in a video recording device as you need to ensure the write speed of the card is sufficient to sustain the video output from the device.

 

[KingFatty]

But it is also helpful to know the read speeds, and whether the write speeds exceed the class rating by anything interesting.

I recall a Sandisk ultra that was marked as a class 4, but it was faster writing than some class 10 cards. So very helpful to actually test different cards and identify the so-called diamonds in the rough.