how to test SD cards?

shiwarrior · 6 Jul 2012

Hey all

not sure where this would go, but here goes

Is there a software avalible that lets you test your SDHC cards ? i hear a lot of fakes about and just want to make sure the 2 i just bought are the real deal

Cheers

JohnMcL7 · 6 Jul 2012

This is the one I use:

http://www.softpedia.com/get/System/System-Miscellaneous/H2testw.shtml

It simply writes files until the memory card is full then reads them back for verification, if the card is genuine it will be able to complete the verify step plus it gives you the read/write performance.

John

shiwarrior · 6 Jul 2012

cheers John

just looking · 7 Jul 2012

Plus some companies do verifications. I did a serial number check on my Transcend CF card the other day. Google it perhaps.

Dexy101 · 7 Jul 2012

Sandisk will also verify the serial number on their cards and tell you if it's genuine or not.

Bilko · 7 Jul 2012

Just tested my two cards.

Sandisk Extreme HD SDHC 16GB Class 10 45Mbs UHS-1

Writing/Reading speed @ 20/22mbs.

Sandisk Extreme HD SDHC 16GB Class 10 30Mbs

Writing/Reading speed @ 17/22.0 Mbs

How bad is that?

shiwarrior · 7 Jul 2012

just realised, i cant do a proper test becuase USB 2 is only 30 Mb/s ? and I don't have USB 3 yet

JohnMcL7 · 7 Jul 2012

Any fake cards I've tested have been really, really slow rather than just a bit slower and they've failed at a very small capacity of around 1-2GB. I don't know if newer fakes are any better.

John

Robbi · 7 Jul 2012

Bilko said:
Just tested my two cards.

Sandisk Extreme HD SDHC 16GB Class 10 45Mbs UHS-1

Writing/Reading speed @ 20/22mbs.

Sandisk Extreme HD SDHC 16GB Class 10 30Mbs

Writing/Reading speed @ 17/22.0 Mbs

How bad is that?

It all depends on how fast your reader can process the information, I use ATTO disk Benchmark software and I get different results depending on wether I use the internal or external card reader (best results using the Lexar external in a USB3 port)