Well, that depends. Are you going to design your own things? If so, you are going to need a bit of power, nothing crazy but a solid machine with plenty of ram. If you are just going to print stuff from thingiverse and other 3d sites, the power is not so important.
Basically, you design or download everything on the computer, run it through the slicer and then spit out a final file. The printer takes that file and does it’s thing. My printer is not even hooked to a computer, I just copy a file to an SD card and plug that into the printer, set it up and say go. I’ve let it print all night a couple of times.
I just got this one a couple of weeks ago, I’ve been printing stuff I downloaded from thingiverse.com. I’m quite happy with it so far.
Comgrow-Ender-3X-Creality
Quick video of it in action:
https://youtu.be/N1lA-AUExj0
I’ll try some of my own designs at some point but I’m not there yet.