Thanks BurrMan.

So... If I understand correctly, you're saying that a Quadro workstation must have a XEON processor
and that i7 (Kaby Lake) is not a good choice.

This could be a serious problem...XEON workstations are too much expensive...

I'm still confused.

There are so many different tech articles around...

I know that a Pascal GTX 1080 TI is a monster and it has much more cuda cores compared to P4000
but I'm also searching a professional card that can give a very good performance with CAD software (like Rhino 3D).

I'm not a gamer.

The problem is that I don't know how these software will run on a NON-Quadro card like GTX 1080 :

Photoshop CC, Rhino 3D, Thea Render and Octane, Moi, Fusion 360.

If GTX 1080 Ti will run that kind of software wihout any problem at faster than Quadro P4000 I will certailny be very happy to get it :)
(what about this ? http://www.corsair.com/en-us/landing/one but with 32 Gb)

Anyway, thanks for your suggestions.

I stay tuned!

- Marco (mkdm)