of course x those assembled there is no doubt, but I took a super-certified hp and with problems that also found the assistance of solidworks, without remedy. works better with sw2016 the old hp workstation (by now 10 years) with an old 600 picture that the z440 with the m4000! after what I saw, I would opt x the w8100, adding a couple of 100 euros. then each make his own considerations. . .reading a bit around the various nvidia technologies, both maxwell and pascall, are technologies that will hardly have an impact on the performance of the programs fall in the immediate, mainly because the cores of these programs, are not like in video games and similar applications, which are created to exploit the technology of the moment, but are the result of an evolution of years to have maximum reliability (this is also a reason why they are based on opengl and not on other libraries).
creo 3.0 came out in 2014, when it was presented maxwell, so I think no dedicated technogology is supported.
many times the cases that you have with the cads and the graphics cards, are due to the drivers especially in the assembled workstations (but also happens with the brand ones); to me it also happened to have to install a driver older than that certificate, solving practically all the problems of the moment.
if not the sw assistance managed to give you directions, I think it is not the video card, but something more than the workstation itself (at the general software level).of course x those assembled there is no doubt, but I took a super-certified hp and with problems that also found the assistance of solidworks, without remedy. works better with sw2016 the old hp workstation (by now 10 years) with an old 600 picture that the z440 with the m4000! after what I saw, I would opt x the w8100, adding a couple of 100 euros. then each make his own considerations. . .