Technically, a fully portable FIFA 17 (run from a USB stick on any PC) is due to:
Downloading in a "highly compressed" or "portable" format allows you to enjoy the first-ever entry in the series powered by the Frostbite Engine without requiring a standard 50GB installation. These versions typically utilize advanced compression to reduce the initial download size to between 17.8GB and 30GB , depending on the included language packs. Essential System Requirements fifa 17 highly compressed pc downloadl portable