Analysis of information sources in references of the Wikipedia article "Mini PC" in English language version.
Generally, mini PCs leverage processing power more commonly seen in laptops and similarly low-powered solutions, but they tend to have more connectivity and upgradability options.
You could save money with a mini PC and get just as much performance out of it and maybe more versatility. Even the relatively speaking pricey $599 entry-level Mac mini M2 supports two displays (three if you opt for the M2 Pro version). If you bomb Amazon for deals you can pick up two 1080p monitors for around $160 for a total spend of $759. By comparison, the cheapest MacBook Air is $999.
A mini-PC is a compact version of a desktop computer. They usually have enough power for everyday tasks like web browsing, office applications, and media playback. Because of their size, they often use lower power components, which makes them quieter and more energy-efficient than their full-size counterparts.