Re: I've said it before...
When I first used CAD it was still on the mainframe, so the machine I sat at was just X-windowing in. The CAD came down to the desktop, and now there are some serious moves to make it cloud-based. Why? A couple of reasons, one being that a simulation or render can be done more quickly by just renting more computing resources, and two, large projects usually involve lots of engineers so it reduces bottlenecks if your colleagues can see your changes in real-time. In fact, grown up CAD software has been for a long time very good at managing documents, references, changes etc.
With that bring true, the most the actual laptop or desktop you use can bring to the party is good ergonomics - i.e a good screen, mouse, keyboard or other HID.
So this idea of a 'workstation'... that's largely a hangover from when CAD software wasn't as stable as it is today, so the CAD vendor would list specific hardware combinations as being 'Certified Workstations'... it just made support and troubleshooting much easier. After that, there is ECC RAM, which is useful if an error in your simulation might result in a real bridge fall on someone's head. And of course the whole 'professional' graphics cards (FirePro instead of Radeon, Quadro instead of GeForce etc) which for many years often only differed from their consumer equivalents by having more suitable drivers and a 4X higher price.