title: Android Virtual Device - Armeabi-v7a vs x86_64
body: <p>I want to make my own Android application. I am using Ubuntu 64bit and IntelliJ. In Virtual Device Configuration, it asks me to choose a system image. All of the options have a <code>Download</code> beside, which means I haven't downloaded any system image.</p>
  
  <p>There are 3 options available for <code>Lollipop</code>(API level 21), which are Armeabi-v7a, x86_64 and x86.(I am using Ubuntu 64 bit so I should not use x86 right?)</p>
  
  <p>Can anyone explain what is Armeabi-v7a for? What are the differences between Armeabi-v7a and x84_64? What "version" should I choose (and which one runs faster ;))?</p>