[Q] Is my Micro SD card really a class 10?

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Hi! I bought a class 10, 8 gb micro sd card from a not-so-trustworthy dealer a couple of week ago for my Galaxy W. The package says it's class 10, but my antutu benchmark tests shows 5.2 MB/s for SD card write and 22.7 MB/s SD card read. I started doubting the authenticity of my SD card when I saw an antutu screenshot somewhere here that showed 15 MB/s SD card write. Someone please help..

Try using SDTools on the market, it tests your External SD card and shows the result about the write/read speed of your External SD card.

And when using Antutu benchmark, make sure that the External SD Card is being tested, and not the Internal SD Card. Open the menu -> Settings -> Choose SD Card, make sure it shows "/sdcard/external_sd", and not just "/sdcard"

Hope this helps

Wow so that's the trick! Thanks for your help bro, now my SD card write is 13.3 MB/s.

Glad to hear that it worked out

Sent from Ridwandroid-2.3.6 : 1804 MHz OC & Customized I8150DXLA2 Stock ROM w/ Cowithgun's kernel & Zeppelinrox V6 Script

how to know if sd is fake >?

See the writing reading speed.

Sent from my GT-I8150