When choosing between Mini-ITX and Micro-ATX for building a smaller computer, you are faced with the decision of how much functionality and expandability you want to sacrifice for a compact size.

There are multiple motherboard sizes with Mini-ITX and Micro ATX being two of the smallest. They differ on more than their sizes, though.

Micro-ATX and Mini-ITX can be used for gaming. But understand that one is better than the other due to size and features. Read all about this here.