I want to buy this PC and play Minecraft on it, among other things.
how much does such a Mini PC differ from others?
can someone help me?
Do you have no space or why such a mini PC? I advise you to get a smart tower PC, if only because of the heat dissipation and interchangeability of components.
The PCs are only used for office, most of them simply access any server to work from it. They are not intended for gaming, for absolutely nothing.
if you need an extremely small gaming setup you can assemble an Asrock A300 for around 300 euro (although the right CPUs are almost gone everywhere)
For Minecraft that thing will just be enough. With the budget, however, there should also be better used systems.