Typically, when writing desktop or server software, you will target an Intel-based architecture such as x86 or x64. However, ARM-based chips are gaining popularity, and they can offer fantastic power efficiency. If the software is specially optimized for them, then they can also offer excellent performance.
For example, the Scratch graphical programming language, used to teach computing, has been optimized for the Raspberry Pi 3, and it now runs roughly twice as fast as it does on an Intel Core i5. Other software applications have also been optimized for the ARM processor, for example, the Kodi open source media player.
ARM Holdings is simply an intellectual property company and they don't make any processors themselves. ...
