Home > Handy Software, How To, Raspberry pi, Technology, Windows 7, WIndows 8, Windows XP > Checking the speed of your Raspberry Pi SD Card

Checking the speed of your Raspberry Pi SD Card

Note that if you do a  read/write test on volatile memory such as USB or SD Cards then you will lose the data on them.

Having just upgraded the SD card on my Raspberry Pi from 4Gb to a 16GB, I was shocked to find that I was now getting a blank screen when running the start x for a good five minutes before the Raspberry Pi desktop would appear.

So I decided to run a program called HD_Speed from the team over at SteelBytes it measures both sustained and burst data transfer rates of your hard disks, cd/dvd-roms, flash cards/sticks, floppys, etc. in a realtime graphical display

The 80KB utility does not require installation and runs with a click. Select the drive and hit start. The read/write results show up as a graph and also as real values.

Which can be downloaded from the following location – http://www.steelbytes.com/?mid=20

It turns out that even though the  SD card for the Raspberry Pi was larger than the my previous SD card it was also a lot slower so it looks like I have to purchase a new faster SD card.

  1. April 23, 2013 at 6:15 am

    At the top of your post you say that it’s dangerous to do a test, that it will mean losing data on the SD card. So how did you manage to run the test without causing the damage? I feel I’m missing something somewhere 😉

  2. April 28, 2013 at 8:09 pm

    That is good point so allow me to clarify

    Well this test is should be done at the start of the SD Card ownership before you put any hard work into the rapsberry pi build however if you want to test the read/write speed you should back the SD card image using the Win32Diskimage software run the test and then restore it.

    Also SD Cards bought from E-bay are not as good as the price makes out 🙂

    • April 28, 2013 at 8:18 pm

      Oh, I see – it _could_ cause damage so don’t do it to anything you have a hankering to keep. Cool. Thanks for clarifying 🙂

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