How to speed up Android SD card read / write speed?

How to speed up Android SD card read / write speed? Simple… Buy a better and higher class SD card will do, right? But I don’t want to waste money to get a new SD card, what should I do then? Just install SD Speed Increase from Android Market. It is an application allows you to change a parameter in file system that manages size of the cache on the memory card. At 2048 kb the performance is optimized, making read-write on SD card faster. Try it see… Note – root access needed.

SD Speed Increase

I am using 4 GB Kingston class 4 SD card on Android HTC HD2. Here is the result from SD Tools ~ Info and Benchmark tools. 10.5 MB/s for writing and 15.8 MB/s for reading on 2048 kb cache. Note – certain custom Android ROM already preset the cache value. So you don’t need to manually to edit it again.

SD Tools

Download SD Speed Increase at Android Market here.
Download SD Tools ~ Info and Benchmark tools at Android Market here.


  1. i’ve try it, but seem nothing changed..default setting speed value @ 128kb , write speed 11.5mb/s, read speed 13.8 mb/s (sd card class 2).

    then change to 1024kb, same result for speed write and read +/-,

    i’ve reboot the phone and all my app that were installed to the sd, icon changed to android icon, even when click, it said..”app not installed in you phone”..shoot!!..

    then i reset to the default value, restart again, all back to normal..lucky me..i’m worried that it will screwed up my SD..hehehe..

    but good app though if it working for me, thinking of changing to higher class of sd.

  2. I always got an error message for my SD card whenever I restart my phone with the “set on every reboot”. The dreadful message that I have to reformat my card always appears.
    I tried using the “corrupted card” in both windows XP and Windows 7. The explorer.exe hanged whenever I clicked the SD cards drive location.

    Use with care! Might be that my smartphone is not supported or something.


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