Decent look at Intel’s most popular chips from Sean Bradley.
The current range of 8th generation Intel Core processors for desktops is pretty vast, with several different processors for each i3, i5, and i7 category.
These are the new Coffee Lake chips. None of these 8th generation Intel chips are available in a Mac. The Mac mini sports a nearly 4-year-old 4th generation chip.
A top-of-the-range Core i5 is going to offer the best performance than any Core i3, but a top-of-the-range Core i3 could be enough for you compared to the slowest Core i5 from the same generation… Similarly, if you’re going to be running very demanding software such as video editing or encoding programs, then you may want to go for a Core i7. But for most people, this is overkill.
Faster chips are coming.